WINDOWS-NT-PERFORMANCE-EXCHANGE

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Category: Windows and Enterprise Performance

Description:

Monitors Microsoft Exchange Server performance metrics on Windows NT platforms including message queues and transport statistics.

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter
TimeTicks
enterprises

From RFC1213-MIB

DisplayString

What Is WINDOWS-NT-PERFORMANCE-EXCHANGE?

WINDOWS-NT-PERFORMANCE-EXCHANGE is a MIB module that exposes Microsoft Exchange Server performance counters as collected via the Windows NT/Windows performance monitoring subsystem, mapped into SNMP for remote polling. It covers Exchange-specific performance data such as message queue depths and transport/delivery statistics rather than generic OS metrics. Its monitoring purpose is entirely software-performance oriented: tracking mail transport health, queue backlogs, and message throughput as key indicators that the Exchange messaging service is functioning normally versus experiencing delivery delays or overload. It implicitly depends on the broader Windows NT SNMP performance-counter mapping framework used across the WINDOWS-NT-PERFORMANCE-* family of MIBs. It is deployed on Windows servers running Microsoft Exchange Server in enterprise email environments where SNMP-based monitoring is preferred alongside or instead of native Windows performance monitoring tools. Engineers can download the WINDOWS-NT-PERFORMANCE-EXCHANGE file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in WINDOWS-NT-PERFORMANCE-EXCHANGE. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

What Can Be Monitored

message queue depth
mail transport statistics
message delivery throughput
Exchange service performance

Supported Devices

Windows server running Microsoft Exchange Server

Monitoring Examples

No sample object or table names were extracted for this module and no module description text was available, so specific object identifiers cannot be cited; conceptually an administrator would poll Exchange message queue length and transport throughput counters to detect a mail queue backlog indicating a delivery bottleneck or a downstream connectivity problem. Without a verified object list, further technical specifics would not be grounded in the actual MIB content.

OIDs

OID symbolic	OID numeric	Type	Access	Description
INT connAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.3	INTEGER	read-only	Associations is the number of associations between the MTA and the connected entity. MTAs may open multiple associations if additional transfer throughput is necessary.
INT connConnectorIndex	1.3.6.1.4.1.311.1.1.3.1.1.2.1.9	INTEGER	read-only	Connector Index is a unique index associated with a connector entity.
INT connCumulativeInboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.15	INTEGER	read-only	Cumulative Inbound Associations is the total number of inbound (remote initiated) associations with the entity, since MTA initialization.
INT connCumulativeOutboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.16	INTEGER	read-only	Cumulative Outbound Associations is the total number of outbound (locally initiated) associations with the entity, since MTA initialization.
INT connCurrentInboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.13	INTEGER	read-only	Current Inbound Associations is the current number of inbound (remote initiated) associations with the entity.
INT connCurrentOutboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.14	INTEGER	read-only	Current Outbound Associations is the current number of outbound (locally initiated) associations with the entity.
INT connFailedOutboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.20	INTEGER	read-only	Failed Outbound Associations is the total number of outbound (locally initiated) associations that have failed, since MTA initialization.
CTR connInboundBytesTotal	1.3.6.1.4.1.311.1.1.3.1.1.2.1.26	Counter	read-only	Inbound Bytes Total is the total volume of message content received from this entity since MTA initialization, measured in kilobytes.
CTR connInboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.2.1.24	Counter	read-only	Inbound Messages Total is the total number of messages received from this entity since MTA initialization.
INT connInboundRejectedTotal	1.3.6.1.4.1.311.1.1.3.1.1.2.1.10	INTEGER	read-only	Inbound Rejected Total is the total number of messages rejected from this entity since MTA initialization.
INT connInboundRejectReason	1.3.6.1.4.1.311.1.1.3.1.1.2.1.22	INTEGER	read-only	Inbound Reject Reason is the reject reason code, if any, for the last association rejected from this entity.
TIK connLastInboundAssociation	1.3.6.1.4.1.311.1.1.3.1.1.2.1.17	TimeTicks	read-only	Last Inbound Association is the time (secs) since the last time an inbound (remote initiated) association for this entity was active.
TIK connLastOutboundAssociation	1.3.6.1.4.1.311.1.1.3.1.1.2.1.18	TimeTicks	read-only	Last Outbound Association is the time (secs) since the last time an outbound (locally initiated) association for this entity was active.
connmSExchangeMTA_ConnectionsEntry	1.3.6.1.4.1.311.1.1.3.1.1.2.1		not-accessible	Performance information for one particular instance of 'mSExchangeMTA-Connections' object.
INT connmSExchangeMTA_ConnectionsIndex	1.3.6.1.4.1.311.1.1.3.1.1.2.1.1	INTEGER	read-only	Index.
STR connmSExchangeMTA_ConnectionsInstance	1.3.6.1.4.1.311.1.1.3.1.1.2.1.2	DisplayString	read-only	Instance name.
connmSExchangeMTA_ConnectionsTable	1.3.6.1.4.1.311.1.1.3.1.1.2		not-accessible	A table containing performance information for instances of 'mSExchangeMTA-Connections' objects.
INT connNextAssociationRetry	1.3.6.1.4.1.311.1.1.3.1.1.2.1.21	INTEGER	read-only	Next Association Retry is the time (secs since 00:00 1st Jan 1970) when this entity is next scheduled to attempt to open an association.
TIK connOldestMessageQueued	1.3.6.1.4.1.311.1.1.3.1.1.2.1.12	TimeTicks	read-only	Oldest Message Queued is the time (secs) since the oldest message in this entity's queue was placed in the queue.
CTR connOutboundBytesTotal	1.3.6.1.4.1.311.1.1.3.1.1.2.1.28	Counter	read-only	Outbound Bytes Total is the total volume of message content transmitted to this entity since MTA initialization, measured in kilobytes.
INT connOutboundFailureReason	1.3.6.1.4.1.311.1.1.3.1.1.2.1.23	INTEGER	read-only	Outbound Failure Reason is the failure reason code, if any, for the last association attempt to this entity.
CTR connOutboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.2.1.25	Counter	read-only	Outbound Messages Total is the total number of messages transmitted to this entity since MTA initialization.
CTR connQueuedBytes	1.3.6.1.4.1.311.1.1.3.1.1.2.1.27	Counter	read-only	Queued Bytes is the total volume of message content currently stored in this entity's queue, measured in kilobytes.
INT connQueueLength	1.3.6.1.4.1.311.1.1.3.1.1.2.1.8	INTEGER	read-only	Queue Length is the number of outstanding messages queued for transfer to the entity.
CTR connReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.2.1.4	Counter	read-only	Receive Bytes/sec is the rate that bytes are received from the connected entity.
CTR connReceiveMessagesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.2.1.6	Counter	read-only	Receive Messages/sec is the rate that messages are received from the connected entity.
INT connRejectedInboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.19	INTEGER	read-only	Rejected Inbound Associations is the total number of inbound (remote initiated) associations that have been rejected, since MTA initialization.
CTR connSendBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.2.1.5	Counter	read-only	Send Bytes/sec is the rate that bytes are sent to the connected entity.
CTR connSendMessagesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.2.1.7	Counter	read-only	Send Messages/sec is the rate that messages are sent to the connected entity.
CTR connTotalRecipientsInbound	1.3.6.1.4.1.311.1.1.3.1.1.2.1.29	Counter	read-only	Total Recipients Inbound is the total number of recipients specified in all messages received from this entity since MTA initialization.
CTR connTotalRecipientsOutbound	1.3.6.1.4.1.311.1.1.3.1.1.2.1.30	Counter	read-only	Total Recipients Outbound is the total number of recipients specified in all messages transmitted to this entity since MTA initialization.
INT connTotalRecipientsQueued	1.3.6.1.4.1.311.1.1.3.1.1.2.1.11	INTEGER	read-only	Total Recipients Queued is the total number of recipients specified in all messages currently stored in this entity's queue.
INT imsBytesQueuedMTS_IN	1.3.6.1.4.1.311.1.1.3.1.1.3.2	INTEGER	read-only	The size, in bytes, of the messages that have been converted from Internet Mail and are awaiting final delivery within MS Exchange Server
INT imsBytesQueuedMTS_OUT	1.3.6.1.4.1.311.1.1.3.1.1.3.5	INTEGER	read-only	The size, in bytes, of the messages waiting to be converted to Internet Mail format
INT imsConnectionsInbound	1.3.6.1.4.1.311.1.1.3.1.1.3.8	INTEGER	read-only	The number of current SMTP connections to the Internet Mail Service established by other SMTP hosts
INT imsConnectionsOutbound	1.3.6.1.4.1.311.1.1.3.1.1.3.9	INTEGER	read-only	The number of current SMTP connections the Internet Mail Service has established to other SMTP hosts
INT imsConnectionsTotalFailed	1.3.6.1.4.1.311.1.1.3.1.1.3.13	INTEGER	read-only	The total number of SMTP connections the Internet Mail Service has attempted to other hosts that failed since it was started
INT imsConnectionsTotalInbound	1.3.6.1.4.1.311.1.1.3.1.1.3.11	INTEGER	read-only	The total number of SMTP connections the Internet Mail Service has accepted from other hosts since it was started
INT imsConnectionsTotalOutbound	1.3.6.1.4.1.311.1.1.3.1.1.3.10	INTEGER	read-only	The total number of successful SMTP connections that the Internet Mail Service has established since it was started
INT imsConnectionsTotalRejected	1.3.6.1.4.1.311.1.1.3.1.1.3.12	INTEGER	read-only	The total number of SMTP connections that the Internet Mail Service has rejected from other hosts since it was started
INT imsInboundBytesPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.22	INTEGER	read-only	The hourly rate of bytes transferred to the MS Exchange Server
INT imsInboundConnectionsPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.27	INTEGER	read-only	The hourly rate at which inbound connections were received
INT imsInboundMessagesPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.24	INTEGER	read-only	The hourly rate messages are transferred to the MS Exchange server
INT imsInboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.3.20	INTEGER	read-only	The total number of Internet messages delivered into MS Exchange Server
INT imsMessagesEnteringMTS_IN	1.3.6.1.4.1.311.1.1.3.1.1.3.3	INTEGER	read-only	The number of messages entering the MTS-IN folder after conversion from Internet Mail format per hour
INT imsMessagesEnteringMTS_OUT	1.3.6.1.4.1.311.1.1.3.1.1.3.6	INTEGER	read-only	Messages that have entered the Internet Mail Service
INT imsMessagesLeavingMTS_OUT	1.3.6.1.4.1.311.1.1.3.1.1.3.7	INTEGER	read-only	The number of messages entering the Outbound Queue per hour
INT imsNDRsTotalInbound	1.3.6.1.4.1.311.1.1.3.1.1.3.16	INTEGER	read-only	The total number of Non-delivery reports generated for outbound mail
INT imsNDRsTotalOutbound	1.3.6.1.4.1.311.1.1.3.1.1.3.17	INTEGER	read-only	The total number of Non-delivery reports generated for inbound mail
INT imsOutboundBytesPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.23	INTEGER	read-only	The hourly rate of bytes transferred to the Internet
INT imsOutboundConnectionsPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.26	INTEGER	read-only	The hourly rate at which outbound connections were made
INT imsOutboundMessagesPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.25	INTEGER	read-only	The hourly rate messages are transferred to the Internet
INT imsOutboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.3.21	INTEGER	read-only	The total number of outbound messages delivered to their destinations
INT imsQueuedInbound	1.3.6.1.4.1.311.1.1.3.1.1.3.15	INTEGER	read-only	The number of messages received from the Internet destined for MS Exchange Server
INT imsQueuedMTS_IN	1.3.6.1.4.1.311.1.1.3.1.1.3.1	INTEGER	read-only	The number of messages awaiting final delivery in MS Exchange Server
INT imsQueuedMTS_OUT	1.3.6.1.4.1.311.1.1.3.1.1.3.4	INTEGER	read-only	The number of messages waiting to be converted to Internet Mail format
INT imsQueuedOutbound	1.3.6.1.4.1.311.1.1.3.1.1.3.14	INTEGER	read-only	The number of messages from MS Exchange Server, that are queued to be delivered to the Internet
INT imsTotalFailedConversions	1.3.6.1.4.1.311.1.1.3.1.1.3.34	INTEGER	read-only	Total message format conversions between internet format and Exchange format that failed.
INT imsTotalInboundKilobytes	1.3.6.1.4.1.311.1.1.3.1.1.3.18	INTEGER	read-only	The total kilobytes of message data transferred into the MS Exchange Server
INT imsTotalInboundRecipients	1.3.6.1.4.1.311.1.1.3.1.1.3.30	INTEGER	read-only	Total number of recipients processed inbound since the Internet Mail Service was started
INT imsTotalKilobytesQueued	1.3.6.1.4.1.311.1.1.3.1.1.3.29	INTEGER	read-only	Total kilobytes of message data queued in the Internet Mail Service queues
INT imsTotalLoopsDetected	1.3.6.1.4.1.311.1.1.3.1.1.3.35	INTEGER	read-only	Total number of messages NDRd because they appeared to be looping infinitely.
INT imsTotalMessagesQueued	1.3.6.1.4.1.311.1.1.3.1.1.3.28	INTEGER	read-only	Total messages waiting in the Internet Mail Service queues
INT imsTotalOutboundKilobytes	1.3.6.1.4.1.311.1.1.3.1.1.3.19	INTEGER	read-only	The total kilobytes of message data transferred out of the MS Exchange Server
INT imsTotalOutboundRecipients	1.3.6.1.4.1.311.1.1.3.1.1.3.31	INTEGER	read-only	Total number of recipients processed outbound since the Internet Mail Service was started
INT imsTotalRecipientsQueued	1.3.6.1.4.1.311.1.1.3.1.1.3.32	INTEGER	read-only	Total number of recipients in the Internet Mail Service queues
INT imsTotalSuccessfulConversions	1.3.6.1.4.1.311.1.1.3.1.1.3.33	INTEGER	read-only	Total message format conversions between internet format and Exchange format that succeeded.
microsoft	1.3.6.1.4.1.311
mSExchangeIMC	1.3.6.1.4.1.311.1.1.3.1.1.3
mSExchangeMTA	1.3.6.1.4.1.311.1.1.3.1.1.1
INT mtaAdjacentMTAAssociations	1.3.6.1.4.1.311.1.1.3.1.1.1.1	INTEGER	read-only	Adjacent MTA Associations is the number of open associations this MTA has to other MTAs.
INT mtaAdminConnections	1.3.6.1.4.1.311.1.1.3.1.1.1.6	INTEGER	read-only	Admin Connections is the number of Microsoft Exchange Administrator programs connected to this MTA.
CTR mtaAdminInterfaceReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.19	Counter	read-only	Admin Interface Receive Bytes/sec is the rate that bytes are received over an Admin connection.
CTR mtaAdminInterfaceTransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.20	Counter	read-only	Admin Interface Transmit Bytes/sec is the rate that bytes are transmitted over an Admin connection.
INT mtaDeferredDeliveryMsgs	1.3.6.1.4.1.311.1.1.3.1.1.1.31	INTEGER	read-only	Deferred Delivery Msgs is the total number of deferred delivery messages currently stored in the MTA.
CTR mtaDiskFileDeletesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.11	Counter	read-only	Disk File Deletes/sec is the rate of disk file delete operations.
CTR mtaDiskFileOpensPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.13	Counter	read-only	Disk File Opens/sec is the rate of disk file open operations.
CTR mtaDiskFileReadsPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.14	Counter	read-only	Disk File Reads/sec is the rate of disk file read operations.
CTR mtaDiskFileSyncsPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.12	Counter	read-only	Disk File Syncs/sec is the rate of disk file sync operations.
CTR mtaDiskFileWritesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.15	Counter	read-only	Disk File Writes/sec is the rate of disk file write operations.
CTR mtaExDSReadCallsPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.16	Counter	read-only	ExDS Read Calls/sec is the rate of read calls to the directory service.
INT mtaFreeElements	1.3.6.1.4.1.311.1.1.3.1.1.1.4	INTEGER	read-only	Free Elements is the number of free buffer elements in the MTA pool.
INT mtaFreeHeaders	1.3.6.1.4.1.311.1.1.3.1.1.1.5	INTEGER	read-only	Free Headers is the number of free buffer headers in the MTA pool.
CTR mtaInboundBytesTotal	1.3.6.1.4.1.311.1.1.3.1.1.1.38	Counter	read-only	Inbound Bytes Total is the total volume of message content received since MTA initialization, measured in kilobytes.
CTR mtaInboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.1.36	Counter	read-only	Inbound Messages Total is the total number of messages received since MTA initialization.
CTR mtaLANReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.21	Counter	read-only	LAN Receive Bytes/sec is the rate that bytes are received over a LAN from MTAs.
CTR mtaLANTransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.22	Counter	read-only	LAN Transmit Bytes/sec is the rate that bytes are transmitted over a LAN to MTAs.
CTR mtaMessageBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.3	Counter	read-only	Message Bytes/sec is the rate that message bytes are processed.
CTR mtaMessagesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.2	Counter	read-only	Messages/sec is the rate that messages are processed.
CTR mtaOutboundBytesTotal	1.3.6.1.4.1.311.1.1.3.1.1.1.40	Counter	read-only	Outbound Bytes Total is the total volume of message content transmitted since MTA initialization, measured in kilobytes.
CTR mtaOutboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.1.37	Counter	read-only	Outbound Messages Total is the total number of messages transmitted since MTA initialization.
CTR mtaRASReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.23	Counter	read-only	RAS Receive Bytes/sec is the rate that bytes are received over a RAS connection.
CTR mtaRASTransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.24	Counter	read-only	RAS Transmit Bytes/sec is the rate that bytes are transmitted over a RAS connection.
CTR mtaTCPPerIPReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.25	Counter	read-only	TCP/IP Receive Bytes/sec is the rate that bytes are received over a TCP/IP connection.
CTR mtaTCPPerIPTransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.26	Counter	read-only	TCP/IP Transmit Bytes/sec is the rate that bytes are transmitted over a TCP/IP connection.
INT mtaThreadsInUse	1.3.6.1.4.1.311.1.1.3.1.1.1.7	INTEGER	read-only	Threads in Use is the number of threads in use by the MTA (does not include RPC threads). This number can be used to determine whether additional processors could be of benefit.
INT mtaTotalFailedConversions	1.3.6.1.4.1.311.1.1.3.1.1.1.34	INTEGER	read-only	Total Failed Conversions is the total number of messages which failed to be converted from one form to another since MTA initialization.
INT mtaTotalLoopsDetected	1.3.6.1.4.1.311.1.1.3.1.1.1.35	INTEGER	read-only	Total Loops Detected is the total number of messages detected to have looped since MTA initialization.
CTR mtaTotalRecipientsInbound	1.3.6.1.4.1.311.1.1.3.1.1.1.41	Counter	read-only	Total Recipients Inbound is the total number of recipients specified in all messages received since MTA initialization.
CTR mtaTotalRecipientsOutbound	1.3.6.1.4.1.311.1.1.3.1.1.1.42	Counter	read-only	Total Recipients Outbound is the total number of recipients specified in all messages transmitted since MTA initialization.
INT mtaTotalRecipientsQueued	1.3.6.1.4.1.311.1.1.3.1.1.1.32	INTEGER	read-only	Total Recipients Queued is the total number of recipients specified in all messages currently stored in the MTA.
INT mtaTotalSuccessfulConversions	1.3.6.1.4.1.311.1.1.3.1.1.1.33	INTEGER	read-only	Total Successful Conversions is the total number of messages successfully converted from one form to another since MTA initialization.
CTR mtaTP4ReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.27	Counter	read-only	TP4 Receive Bytes/sec is the rate that bytes are received over a TP4 connection.
CTR mtaTP4TransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.28	Counter	read-only	TP4 Transmit Bytes/sec is the rate that bytes are transmitted over a TP4 connection.
CTR mtaWorkQueueBytes	1.3.6.1.4.1.311.1.1.3.1.1.1.39	Counter	read-only	Work Queue Bytes is the total volume of message content currently stored in the MTA, measured in kilobytes.
INT mtaWorkQueueLength	1.3.6.1.4.1.311.1.1.3.1.1.1.8	INTEGER	read-only	Work Queue Length is the number of outstanding messages in the Work Queue, which indicates the number of messages not yet processed to completion by the MTA.
CTR mtaX25ReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.29	Counter	read-only	X.25 Receive Bytes/sec is the rate that bytes are received over an X.25 connection.
CTR mtaX25TransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.30	Counter	read-only	X.25 Transmit Bytes/sec is the rate that bytes are transmitted over an X.25 connection.
INT mtaXAPIClients	1.3.6.1.4.1.311.1.1.3.1.1.1.10	INTEGER	read-only	XAPI Clients is the number of XAPI clients connected to the MTA using the XAPI MA/OM interface. A single client may have multiple XAPI client sessions.
INT mtaXAPIGateways	1.3.6.1.4.1.311.1.1.3.1.1.1.9	INTEGER	read-only	XAPI Gateways is the number of gateways connected to the MTA using the XAPI MT/OM interface. A single gateway may have multiple XAPI gateway sessions.
CTR mtaXAPIReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.17	Counter	read-only	XAPI Receive Bytes/sec is the rate that bytes are received over a XAPI connection.
CTR mtaXAPITransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.18	Counter	read-only	XAPI Transmit Bytes/sec is the rate that bytes are transmitted over a XAPI connection.
os	1.3.6.1.4.1.311.1.1.3
performance	1.3.6.1.4.1.311.1.1.3.1.1
software	1.3.6.1.4.1.311.1
systems	1.3.6.1.4.1.311.1.1
winnt	1.3.6.1.4.1.311.1.1.3.1

OID symbolic	OID numeric	Type	Access	Description
microsoft	1.3.6.1.4.1.311
software	1.3.6.1.4.1.311.1
systems	1.3.6.1.4.1.311.1.1
os	1.3.6.1.4.1.311.1.1.3
winnt	1.3.6.1.4.1.311.1.1.3.1
performance	1.3.6.1.4.1.311.1.1.3.1.1
mSExchangeMTA	1.3.6.1.4.1.311.1.1.3.1.1.1
INT mtaAdjacentMTAAssociations	1.3.6.1.4.1.311.1.1.3.1.1.1.1	INTEGER	read-only	Adjacent MTA Associations is the number of open associations this MTA has to other MTAs.
CTR mtaMessagesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.2	Counter	read-only	Messages/sec is the rate that messages are processed.
CTR mtaMessageBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.3	Counter	read-only	Message Bytes/sec is the rate that message bytes are processed.
INT mtaFreeElements	1.3.6.1.4.1.311.1.1.3.1.1.1.4	INTEGER	read-only	Free Elements is the number of free buffer elements in the MTA pool.
INT mtaFreeHeaders	1.3.6.1.4.1.311.1.1.3.1.1.1.5	INTEGER	read-only	Free Headers is the number of free buffer headers in the MTA pool.
INT mtaAdminConnections	1.3.6.1.4.1.311.1.1.3.1.1.1.6	INTEGER	read-only	Admin Connections is the number of Microsoft Exchange Administrator programs connected to this MTA.
INT mtaThreadsInUse	1.3.6.1.4.1.311.1.1.3.1.1.1.7	INTEGER	read-only	Threads in Use is the number of threads in use by the MTA (does not include RPC threads). This number can be used to determine whether additional processors could be of benefit.
INT mtaWorkQueueLength	1.3.6.1.4.1.311.1.1.3.1.1.1.8	INTEGER	read-only	Work Queue Length is the number of outstanding messages in the Work Queue, which indicates the number of messages not yet processed to completion by the MTA.
INT mtaXAPIGateways	1.3.6.1.4.1.311.1.1.3.1.1.1.9	INTEGER	read-only	XAPI Gateways is the number of gateways connected to the MTA using the XAPI MT/OM interface. A single gateway may have multiple XAPI gateway sessions.
INT mtaXAPIClients	1.3.6.1.4.1.311.1.1.3.1.1.1.10	INTEGER	read-only	XAPI Clients is the number of XAPI clients connected to the MTA using the XAPI MA/OM interface. A single client may have multiple XAPI client sessions.
CTR mtaDiskFileDeletesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.11	Counter	read-only	Disk File Deletes/sec is the rate of disk file delete operations.
CTR mtaDiskFileSyncsPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.12	Counter	read-only	Disk File Syncs/sec is the rate of disk file sync operations.
CTR mtaDiskFileOpensPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.13	Counter	read-only	Disk File Opens/sec is the rate of disk file open operations.
CTR mtaDiskFileReadsPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.14	Counter	read-only	Disk File Reads/sec is the rate of disk file read operations.
CTR mtaDiskFileWritesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.15	Counter	read-only	Disk File Writes/sec is the rate of disk file write operations.
CTR mtaExDSReadCallsPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.16	Counter	read-only	ExDS Read Calls/sec is the rate of read calls to the directory service.
CTR mtaXAPIReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.17	Counter	read-only	XAPI Receive Bytes/sec is the rate that bytes are received over a XAPI connection.
CTR mtaXAPITransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.18	Counter	read-only	XAPI Transmit Bytes/sec is the rate that bytes are transmitted over a XAPI connection.
CTR mtaAdminInterfaceReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.19	Counter	read-only	Admin Interface Receive Bytes/sec is the rate that bytes are received over an Admin connection.
CTR mtaAdminInterfaceTransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.20	Counter	read-only	Admin Interface Transmit Bytes/sec is the rate that bytes are transmitted over an Admin connection.
CTR mtaLANReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.21	Counter	read-only	LAN Receive Bytes/sec is the rate that bytes are received over a LAN from MTAs.
CTR mtaLANTransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.22	Counter	read-only	LAN Transmit Bytes/sec is the rate that bytes are transmitted over a LAN to MTAs.
CTR mtaRASReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.23	Counter	read-only	RAS Receive Bytes/sec is the rate that bytes are received over a RAS connection.
CTR mtaRASTransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.24	Counter	read-only	RAS Transmit Bytes/sec is the rate that bytes are transmitted over a RAS connection.
CTR mtaTCPPerIPReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.25	Counter	read-only	TCP/IP Receive Bytes/sec is the rate that bytes are received over a TCP/IP connection.
CTR mtaTCPPerIPTransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.26	Counter	read-only	TCP/IP Transmit Bytes/sec is the rate that bytes are transmitted over a TCP/IP connection.
CTR mtaTP4ReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.27	Counter	read-only	TP4 Receive Bytes/sec is the rate that bytes are received over a TP4 connection.
CTR mtaTP4TransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.28	Counter	read-only	TP4 Transmit Bytes/sec is the rate that bytes are transmitted over a TP4 connection.
CTR mtaX25ReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.29	Counter	read-only	X.25 Receive Bytes/sec is the rate that bytes are received over an X.25 connection.
CTR mtaX25TransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.30	Counter	read-only	X.25 Transmit Bytes/sec is the rate that bytes are transmitted over an X.25 connection.
INT mtaDeferredDeliveryMsgs	1.3.6.1.4.1.311.1.1.3.1.1.1.31	INTEGER	read-only	Deferred Delivery Msgs is the total number of deferred delivery messages currently stored in the MTA.
INT mtaTotalRecipientsQueued	1.3.6.1.4.1.311.1.1.3.1.1.1.32	INTEGER	read-only	Total Recipients Queued is the total number of recipients specified in all messages currently stored in the MTA.
INT mtaTotalSuccessfulConversions	1.3.6.1.4.1.311.1.1.3.1.1.1.33	INTEGER	read-only	Total Successful Conversions is the total number of messages successfully converted from one form to another since MTA initialization.
INT mtaTotalFailedConversions	1.3.6.1.4.1.311.1.1.3.1.1.1.34	INTEGER	read-only	Total Failed Conversions is the total number of messages which failed to be converted from one form to another since MTA initialization.
INT mtaTotalLoopsDetected	1.3.6.1.4.1.311.1.1.3.1.1.1.35	INTEGER	read-only	Total Loops Detected is the total number of messages detected to have looped since MTA initialization.
CTR mtaInboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.1.36	Counter	read-only	Inbound Messages Total is the total number of messages received since MTA initialization.
CTR mtaOutboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.1.37	Counter	read-only	Outbound Messages Total is the total number of messages transmitted since MTA initialization.
CTR mtaInboundBytesTotal	1.3.6.1.4.1.311.1.1.3.1.1.1.38	Counter	read-only	Inbound Bytes Total is the total volume of message content received since MTA initialization, measured in kilobytes.
CTR mtaWorkQueueBytes	1.3.6.1.4.1.311.1.1.3.1.1.1.39	Counter	read-only	Work Queue Bytes is the total volume of message content currently stored in the MTA, measured in kilobytes.
CTR mtaOutboundBytesTotal	1.3.6.1.4.1.311.1.1.3.1.1.1.40	Counter	read-only	Outbound Bytes Total is the total volume of message content transmitted since MTA initialization, measured in kilobytes.
CTR mtaTotalRecipientsInbound	1.3.6.1.4.1.311.1.1.3.1.1.1.41	Counter	read-only	Total Recipients Inbound is the total number of recipients specified in all messages received since MTA initialization.
CTR mtaTotalRecipientsOutbound	1.3.6.1.4.1.311.1.1.3.1.1.1.42	Counter	read-only	Total Recipients Outbound is the total number of recipients specified in all messages transmitted since MTA initialization.
connmSExchangeMTA_ConnectionsTable	1.3.6.1.4.1.311.1.1.3.1.1.2		not-accessible	A table containing performance information for instances of 'mSExchangeMTA-Connections' objects.
connmSExchangeMTA_ConnectionsEntry	1.3.6.1.4.1.311.1.1.3.1.1.2.1		not-accessible	Performance information for one particular instance of 'mSExchangeMTA-Connections' object.
INT connmSExchangeMTA_ConnectionsIndex	1.3.6.1.4.1.311.1.1.3.1.1.2.1.1	INTEGER	read-only	Index.
STR connmSExchangeMTA_ConnectionsInstance	1.3.6.1.4.1.311.1.1.3.1.1.2.1.2	DisplayString	read-only	Instance name.
INT connAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.3	INTEGER	read-only	Associations is the number of associations between the MTA and the connected entity. MTAs may open multiple associations if additional transfer throughput is necessary.
CTR connReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.2.1.4	Counter	read-only	Receive Bytes/sec is the rate that bytes are received from the connected entity.
CTR connSendBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.2.1.5	Counter	read-only	Send Bytes/sec is the rate that bytes are sent to the connected entity.
CTR connReceiveMessagesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.2.1.6	Counter	read-only	Receive Messages/sec is the rate that messages are received from the connected entity.
CTR connSendMessagesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.2.1.7	Counter	read-only	Send Messages/sec is the rate that messages are sent to the connected entity.
INT connQueueLength	1.3.6.1.4.1.311.1.1.3.1.1.2.1.8	INTEGER	read-only	Queue Length is the number of outstanding messages queued for transfer to the entity.
INT connConnectorIndex	1.3.6.1.4.1.311.1.1.3.1.1.2.1.9	INTEGER	read-only	Connector Index is a unique index associated with a connector entity.
INT connInboundRejectedTotal	1.3.6.1.4.1.311.1.1.3.1.1.2.1.10	INTEGER	read-only	Inbound Rejected Total is the total number of messages rejected from this entity since MTA initialization.
INT connTotalRecipientsQueued	1.3.6.1.4.1.311.1.1.3.1.1.2.1.11	INTEGER	read-only	Total Recipients Queued is the total number of recipients specified in all messages currently stored in this entity's queue.
TIK connOldestMessageQueued	1.3.6.1.4.1.311.1.1.3.1.1.2.1.12	TimeTicks	read-only	Oldest Message Queued is the time (secs) since the oldest message in this entity's queue was placed in the queue.
INT connCurrentInboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.13	INTEGER	read-only	Current Inbound Associations is the current number of inbound (remote initiated) associations with the entity.
INT connCurrentOutboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.14	INTEGER	read-only	Current Outbound Associations is the current number of outbound (locally initiated) associations with the entity.
INT connCumulativeInboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.15	INTEGER	read-only	Cumulative Inbound Associations is the total number of inbound (remote initiated) associations with the entity, since MTA initialization.
INT connCumulativeOutboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.16	INTEGER	read-only	Cumulative Outbound Associations is the total number of outbound (locally initiated) associations with the entity, since MTA initialization.
TIK connLastInboundAssociation	1.3.6.1.4.1.311.1.1.3.1.1.2.1.17	TimeTicks	read-only	Last Inbound Association is the time (secs) since the last time an inbound (remote initiated) association for this entity was active.
TIK connLastOutboundAssociation	1.3.6.1.4.1.311.1.1.3.1.1.2.1.18	TimeTicks	read-only	Last Outbound Association is the time (secs) since the last time an outbound (locally initiated) association for this entity was active.
INT connRejectedInboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.19	INTEGER	read-only	Rejected Inbound Associations is the total number of inbound (remote initiated) associations that have been rejected, since MTA initialization.
INT connFailedOutboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.20	INTEGER	read-only	Failed Outbound Associations is the total number of outbound (locally initiated) associations that have failed, since MTA initialization.
INT connNextAssociationRetry	1.3.6.1.4.1.311.1.1.3.1.1.2.1.21	INTEGER	read-only	Next Association Retry is the time (secs since 00:00 1st Jan 1970) when this entity is next scheduled to attempt to open an association.
INT connInboundRejectReason	1.3.6.1.4.1.311.1.1.3.1.1.2.1.22	INTEGER	read-only	Inbound Reject Reason is the reject reason code, if any, for the last association rejected from this entity.
INT connOutboundFailureReason	1.3.6.1.4.1.311.1.1.3.1.1.2.1.23	INTEGER	read-only	Outbound Failure Reason is the failure reason code, if any, for the last association attempt to this entity.
CTR connInboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.2.1.24	Counter	read-only	Inbound Messages Total is the total number of messages received from this entity since MTA initialization.
CTR connOutboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.2.1.25	Counter	read-only	Outbound Messages Total is the total number of messages transmitted to this entity since MTA initialization.
CTR connInboundBytesTotal	1.3.6.1.4.1.311.1.1.3.1.1.2.1.26	Counter	read-only	Inbound Bytes Total is the total volume of message content received from this entity since MTA initialization, measured in kilobytes.
CTR connQueuedBytes	1.3.6.1.4.1.311.1.1.3.1.1.2.1.27	Counter	read-only	Queued Bytes is the total volume of message content currently stored in this entity's queue, measured in kilobytes.
CTR connOutboundBytesTotal	1.3.6.1.4.1.311.1.1.3.1.1.2.1.28	Counter	read-only	Outbound Bytes Total is the total volume of message content transmitted to this entity since MTA initialization, measured in kilobytes.
CTR connTotalRecipientsInbound	1.3.6.1.4.1.311.1.1.3.1.1.2.1.29	Counter	read-only	Total Recipients Inbound is the total number of recipients specified in all messages received from this entity since MTA initialization.
CTR connTotalRecipientsOutbound	1.3.6.1.4.1.311.1.1.3.1.1.2.1.30	Counter	read-only	Total Recipients Outbound is the total number of recipients specified in all messages transmitted to this entity since MTA initialization.
mSExchangeIMC	1.3.6.1.4.1.311.1.1.3.1.1.3
INT imsQueuedMTS_IN	1.3.6.1.4.1.311.1.1.3.1.1.3.1	INTEGER	read-only	The number of messages awaiting final delivery in MS Exchange Server
INT imsBytesQueuedMTS_IN	1.3.6.1.4.1.311.1.1.3.1.1.3.2	INTEGER	read-only	The size, in bytes, of the messages that have been converted from Internet Mail and are awaiting final delivery within MS Exchange Server
INT imsMessagesEnteringMTS_IN	1.3.6.1.4.1.311.1.1.3.1.1.3.3	INTEGER	read-only	The number of messages entering the MTS-IN folder after conversion from Internet Mail format per hour
INT imsQueuedMTS_OUT	1.3.6.1.4.1.311.1.1.3.1.1.3.4	INTEGER	read-only	The number of messages waiting to be converted to Internet Mail format
INT imsBytesQueuedMTS_OUT	1.3.6.1.4.1.311.1.1.3.1.1.3.5	INTEGER	read-only	The size, in bytes, of the messages waiting to be converted to Internet Mail format
INT imsMessagesEnteringMTS_OUT	1.3.6.1.4.1.311.1.1.3.1.1.3.6	INTEGER	read-only	Messages that have entered the Internet Mail Service
INT imsMessagesLeavingMTS_OUT	1.3.6.1.4.1.311.1.1.3.1.1.3.7	INTEGER	read-only	The number of messages entering the Outbound Queue per hour
INT imsConnectionsInbound	1.3.6.1.4.1.311.1.1.3.1.1.3.8	INTEGER	read-only	The number of current SMTP connections to the Internet Mail Service established by other SMTP hosts
INT imsConnectionsOutbound	1.3.6.1.4.1.311.1.1.3.1.1.3.9	INTEGER	read-only	The number of current SMTP connections the Internet Mail Service has established to other SMTP hosts
INT imsConnectionsTotalOutbound	1.3.6.1.4.1.311.1.1.3.1.1.3.10	INTEGER	read-only	The total number of successful SMTP connections that the Internet Mail Service has established since it was started
INT imsConnectionsTotalInbound	1.3.6.1.4.1.311.1.1.3.1.1.3.11	INTEGER	read-only	The total number of SMTP connections the Internet Mail Service has accepted from other hosts since it was started
INT imsConnectionsTotalRejected	1.3.6.1.4.1.311.1.1.3.1.1.3.12	INTEGER	read-only	The total number of SMTP connections that the Internet Mail Service has rejected from other hosts since it was started
INT imsConnectionsTotalFailed	1.3.6.1.4.1.311.1.1.3.1.1.3.13	INTEGER	read-only	The total number of SMTP connections the Internet Mail Service has attempted to other hosts that failed since it was started
INT imsQueuedOutbound	1.3.6.1.4.1.311.1.1.3.1.1.3.14	INTEGER	read-only	The number of messages from MS Exchange Server, that are queued to be delivered to the Internet
INT imsQueuedInbound	1.3.6.1.4.1.311.1.1.3.1.1.3.15	INTEGER	read-only	The number of messages received from the Internet destined for MS Exchange Server
INT imsNDRsTotalInbound	1.3.6.1.4.1.311.1.1.3.1.1.3.16	INTEGER	read-only	The total number of Non-delivery reports generated for outbound mail
INT imsNDRsTotalOutbound	1.3.6.1.4.1.311.1.1.3.1.1.3.17	INTEGER	read-only	The total number of Non-delivery reports generated for inbound mail
INT imsTotalInboundKilobytes	1.3.6.1.4.1.311.1.1.3.1.1.3.18	INTEGER	read-only	The total kilobytes of message data transferred into the MS Exchange Server
INT imsTotalOutboundKilobytes	1.3.6.1.4.1.311.1.1.3.1.1.3.19	INTEGER	read-only	The total kilobytes of message data transferred out of the MS Exchange Server
INT imsInboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.3.20	INTEGER	read-only	The total number of Internet messages delivered into MS Exchange Server
INT imsOutboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.3.21	INTEGER	read-only	The total number of outbound messages delivered to their destinations
INT imsInboundBytesPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.22	INTEGER	read-only	The hourly rate of bytes transferred to the MS Exchange Server
INT imsOutboundBytesPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.23	INTEGER	read-only	The hourly rate of bytes transferred to the Internet
INT imsInboundMessagesPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.24	INTEGER	read-only	The hourly rate messages are transferred to the MS Exchange server
INT imsOutboundMessagesPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.25	INTEGER	read-only	The hourly rate messages are transferred to the Internet
INT imsOutboundConnectionsPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.26	INTEGER	read-only	The hourly rate at which outbound connections were made
INT imsInboundConnectionsPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.27	INTEGER	read-only	The hourly rate at which inbound connections were received
INT imsTotalMessagesQueued	1.3.6.1.4.1.311.1.1.3.1.1.3.28	INTEGER	read-only	Total messages waiting in the Internet Mail Service queues
INT imsTotalKilobytesQueued	1.3.6.1.4.1.311.1.1.3.1.1.3.29	INTEGER	read-only	Total kilobytes of message data queued in the Internet Mail Service queues
INT imsTotalInboundRecipients	1.3.6.1.4.1.311.1.1.3.1.1.3.30	INTEGER	read-only	Total number of recipients processed inbound since the Internet Mail Service was started
INT imsTotalOutboundRecipients	1.3.6.1.4.1.311.1.1.3.1.1.3.31	INTEGER	read-only	Total number of recipients processed outbound since the Internet Mail Service was started
INT imsTotalRecipientsQueued	1.3.6.1.4.1.311.1.1.3.1.1.3.32	INTEGER	read-only	Total number of recipients in the Internet Mail Service queues
INT imsTotalSuccessfulConversions	1.3.6.1.4.1.311.1.1.3.1.1.3.33	INTEGER	read-only	Total message format conversions between internet format and Exchange format that succeeded.
INT imsTotalFailedConversions	1.3.6.1.4.1.311.1.1.3.1.1.3.34	INTEGER	read-only	Total message format conversions between internet format and Exchange format that failed.
INT imsTotalLoopsDetected	1.3.6.1.4.1.311.1.1.3.1.1.3.35	INTEGER	read-only	Total number of messages NDRd because they appeared to be looping infinitely.

Counter (40)
CTR connInboundBytesTotal	1.3.6.1.4.1.311.1.1.3.1.1.2.1.26	Counter	read-only	Inbound Bytes Total is the total volume of message content received from this entity since MTA initialization, measured in kilobytes.
CTR connInboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.2.1.24	Counter	read-only	Inbound Messages Total is the total number of messages received from this entity since MTA initialization.
CTR connOutboundBytesTotal	1.3.6.1.4.1.311.1.1.3.1.1.2.1.28	Counter	read-only	Outbound Bytes Total is the total volume of message content transmitted to this entity since MTA initialization, measured in kilobytes.
CTR connOutboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.2.1.25	Counter	read-only	Outbound Messages Total is the total number of messages transmitted to this entity since MTA initialization.
CTR connQueuedBytes	1.3.6.1.4.1.311.1.1.3.1.1.2.1.27	Counter	read-only	Queued Bytes is the total volume of message content currently stored in this entity's queue, measured in kilobytes.
CTR connReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.2.1.4	Counter	read-only	Receive Bytes/sec is the rate that bytes are received from the connected entity.
CTR connReceiveMessagesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.2.1.6	Counter	read-only	Receive Messages/sec is the rate that messages are received from the connected entity.
CTR connSendBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.2.1.5	Counter	read-only	Send Bytes/sec is the rate that bytes are sent to the connected entity.
CTR connSendMessagesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.2.1.7	Counter	read-only	Send Messages/sec is the rate that messages are sent to the connected entity.
CTR connTotalRecipientsInbound	1.3.6.1.4.1.311.1.1.3.1.1.2.1.29	Counter	read-only	Total Recipients Inbound is the total number of recipients specified in all messages received from this entity since MTA initialization.
CTR connTotalRecipientsOutbound	1.3.6.1.4.1.311.1.1.3.1.1.2.1.30	Counter	read-only	Total Recipients Outbound is the total number of recipients specified in all messages transmitted to this entity since MTA initialization.
CTR mtaAdminInterfaceReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.19	Counter	read-only	Admin Interface Receive Bytes/sec is the rate that bytes are received over an Admin connection.
CTR mtaAdminInterfaceTransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.20	Counter	read-only	Admin Interface Transmit Bytes/sec is the rate that bytes are transmitted over an Admin connection.
CTR mtaDiskFileDeletesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.11	Counter	read-only	Disk File Deletes/sec is the rate of disk file delete operations.
CTR mtaDiskFileOpensPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.13	Counter	read-only	Disk File Opens/sec is the rate of disk file open operations.
CTR mtaDiskFileReadsPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.14	Counter	read-only	Disk File Reads/sec is the rate of disk file read operations.
CTR mtaDiskFileSyncsPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.12	Counter	read-only	Disk File Syncs/sec is the rate of disk file sync operations.
CTR mtaDiskFileWritesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.15	Counter	read-only	Disk File Writes/sec is the rate of disk file write operations.
CTR mtaExDSReadCallsPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.16	Counter	read-only	ExDS Read Calls/sec is the rate of read calls to the directory service.
CTR mtaInboundBytesTotal	1.3.6.1.4.1.311.1.1.3.1.1.1.38	Counter	read-only	Inbound Bytes Total is the total volume of message content received since MTA initialization, measured in kilobytes.
CTR mtaInboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.1.36	Counter	read-only	Inbound Messages Total is the total number of messages received since MTA initialization.
CTR mtaLANReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.21	Counter	read-only	LAN Receive Bytes/sec is the rate that bytes are received over a LAN from MTAs.
CTR mtaLANTransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.22	Counter	read-only	LAN Transmit Bytes/sec is the rate that bytes are transmitted over a LAN to MTAs.
CTR mtaMessageBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.3	Counter	read-only	Message Bytes/sec is the rate that message bytes are processed.
CTR mtaMessagesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.2	Counter	read-only	Messages/sec is the rate that messages are processed.
CTR mtaOutboundBytesTotal	1.3.6.1.4.1.311.1.1.3.1.1.1.40	Counter	read-only	Outbound Bytes Total is the total volume of message content transmitted since MTA initialization, measured in kilobytes.
CTR mtaOutboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.1.37	Counter	read-only	Outbound Messages Total is the total number of messages transmitted since MTA initialization.
CTR mtaRASReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.23	Counter	read-only	RAS Receive Bytes/sec is the rate that bytes are received over a RAS connection.
CTR mtaRASTransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.24	Counter	read-only	RAS Transmit Bytes/sec is the rate that bytes are transmitted over a RAS connection.
CTR mtaTCPPerIPReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.25	Counter	read-only	TCP/IP Receive Bytes/sec is the rate that bytes are received over a TCP/IP connection.
CTR mtaTCPPerIPTransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.26	Counter	read-only	TCP/IP Transmit Bytes/sec is the rate that bytes are transmitted over a TCP/IP connection.
CTR mtaTotalRecipientsInbound	1.3.6.1.4.1.311.1.1.3.1.1.1.41	Counter	read-only	Total Recipients Inbound is the total number of recipients specified in all messages received since MTA initialization.
CTR mtaTotalRecipientsOutbound	1.3.6.1.4.1.311.1.1.3.1.1.1.42	Counter	read-only	Total Recipients Outbound is the total number of recipients specified in all messages transmitted since MTA initialization.
CTR mtaTP4ReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.27	Counter	read-only	TP4 Receive Bytes/sec is the rate that bytes are received over a TP4 connection.
CTR mtaTP4TransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.28	Counter	read-only	TP4 Transmit Bytes/sec is the rate that bytes are transmitted over a TP4 connection.
CTR mtaWorkQueueBytes	1.3.6.1.4.1.311.1.1.3.1.1.1.39	Counter	read-only	Work Queue Bytes is the total volume of message content currently stored in the MTA, measured in kilobytes.
CTR mtaX25ReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.29	Counter	read-only	X.25 Receive Bytes/sec is the rate that bytes are received over an X.25 connection.
CTR mtaX25TransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.30	Counter	read-only	X.25 Transmit Bytes/sec is the rate that bytes are transmitted over an X.25 connection.
CTR mtaXAPIReceiveBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.17	Counter	read-only	XAPI Receive Bytes/sec is the rate that bytes are received over a XAPI connection.
CTR mtaXAPITransmitBytesPerSec	1.3.6.1.4.1.311.1.1.3.1.1.1.18	Counter	read-only	XAPI Transmit Bytes/sec is the rate that bytes are transmitted over a XAPI connection.
DisplayString (1)
STR connmSExchangeMTA_ConnectionsInstance	1.3.6.1.4.1.311.1.1.3.1.1.2.1.2	DisplayString	read-only	Instance name.
INTEGER (63)
INT connAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.3	INTEGER	read-only	Associations is the number of associations between the MTA and the connected entity. MTAs may open multiple associations if additional transfer throughput is necessary.
INT connConnectorIndex	1.3.6.1.4.1.311.1.1.3.1.1.2.1.9	INTEGER	read-only	Connector Index is a unique index associated with a connector entity.
INT connCumulativeInboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.15	INTEGER	read-only	Cumulative Inbound Associations is the total number of inbound (remote initiated) associations with the entity, since MTA initialization.
INT connCumulativeOutboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.16	INTEGER	read-only	Cumulative Outbound Associations is the total number of outbound (locally initiated) associations with the entity, since MTA initialization.
INT connCurrentInboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.13	INTEGER	read-only	Current Inbound Associations is the current number of inbound (remote initiated) associations with the entity.
INT connCurrentOutboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.14	INTEGER	read-only	Current Outbound Associations is the current number of outbound (locally initiated) associations with the entity.
INT connFailedOutboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.20	INTEGER	read-only	Failed Outbound Associations is the total number of outbound (locally initiated) associations that have failed, since MTA initialization.
INT connInboundRejectedTotal	1.3.6.1.4.1.311.1.1.3.1.1.2.1.10	INTEGER	read-only	Inbound Rejected Total is the total number of messages rejected from this entity since MTA initialization.
INT connInboundRejectReason	1.3.6.1.4.1.311.1.1.3.1.1.2.1.22	INTEGER	read-only	Inbound Reject Reason is the reject reason code, if any, for the last association rejected from this entity.
INT connmSExchangeMTA_ConnectionsIndex	1.3.6.1.4.1.311.1.1.3.1.1.2.1.1	INTEGER	read-only	Index.
INT connNextAssociationRetry	1.3.6.1.4.1.311.1.1.3.1.1.2.1.21	INTEGER	read-only	Next Association Retry is the time (secs since 00:00 1st Jan 1970) when this entity is next scheduled to attempt to open an association.
INT connOutboundFailureReason	1.3.6.1.4.1.311.1.1.3.1.1.2.1.23	INTEGER	read-only	Outbound Failure Reason is the failure reason code, if any, for the last association attempt to this entity.
INT connQueueLength	1.3.6.1.4.1.311.1.1.3.1.1.2.1.8	INTEGER	read-only	Queue Length is the number of outstanding messages queued for transfer to the entity.
INT connRejectedInboundAssociations	1.3.6.1.4.1.311.1.1.3.1.1.2.1.19	INTEGER	read-only	Rejected Inbound Associations is the total number of inbound (remote initiated) associations that have been rejected, since MTA initialization.
INT connTotalRecipientsQueued	1.3.6.1.4.1.311.1.1.3.1.1.2.1.11	INTEGER	read-only	Total Recipients Queued is the total number of recipients specified in all messages currently stored in this entity's queue.
INT imsBytesQueuedMTS_IN	1.3.6.1.4.1.311.1.1.3.1.1.3.2	INTEGER	read-only	The size, in bytes, of the messages that have been converted from Internet Mail and are awaiting final delivery within MS Exchange Server
INT imsBytesQueuedMTS_OUT	1.3.6.1.4.1.311.1.1.3.1.1.3.5	INTEGER	read-only	The size, in bytes, of the messages waiting to be converted to Internet Mail format
INT imsConnectionsInbound	1.3.6.1.4.1.311.1.1.3.1.1.3.8	INTEGER	read-only	The number of current SMTP connections to the Internet Mail Service established by other SMTP hosts
INT imsConnectionsOutbound	1.3.6.1.4.1.311.1.1.3.1.1.3.9	INTEGER	read-only	The number of current SMTP connections the Internet Mail Service has established to other SMTP hosts
INT imsConnectionsTotalFailed	1.3.6.1.4.1.311.1.1.3.1.1.3.13	INTEGER	read-only	The total number of SMTP connections the Internet Mail Service has attempted to other hosts that failed since it was started
INT imsConnectionsTotalInbound	1.3.6.1.4.1.311.1.1.3.1.1.3.11	INTEGER	read-only	The total number of SMTP connections the Internet Mail Service has accepted from other hosts since it was started
INT imsConnectionsTotalOutbound	1.3.6.1.4.1.311.1.1.3.1.1.3.10	INTEGER	read-only	The total number of successful SMTP connections that the Internet Mail Service has established since it was started
INT imsConnectionsTotalRejected	1.3.6.1.4.1.311.1.1.3.1.1.3.12	INTEGER	read-only	The total number of SMTP connections that the Internet Mail Service has rejected from other hosts since it was started
INT imsInboundBytesPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.22	INTEGER	read-only	The hourly rate of bytes transferred to the MS Exchange Server
INT imsInboundConnectionsPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.27	INTEGER	read-only	The hourly rate at which inbound connections were received
INT imsInboundMessagesPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.24	INTEGER	read-only	The hourly rate messages are transferred to the MS Exchange server
INT imsInboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.3.20	INTEGER	read-only	The total number of Internet messages delivered into MS Exchange Server
INT imsMessagesEnteringMTS_IN	1.3.6.1.4.1.311.1.1.3.1.1.3.3	INTEGER	read-only	The number of messages entering the MTS-IN folder after conversion from Internet Mail format per hour
INT imsMessagesEnteringMTS_OUT	1.3.6.1.4.1.311.1.1.3.1.1.3.6	INTEGER	read-only	Messages that have entered the Internet Mail Service
INT imsMessagesLeavingMTS_OUT	1.3.6.1.4.1.311.1.1.3.1.1.3.7	INTEGER	read-only	The number of messages entering the Outbound Queue per hour
INT imsNDRsTotalInbound	1.3.6.1.4.1.311.1.1.3.1.1.3.16	INTEGER	read-only	The total number of Non-delivery reports generated for outbound mail
INT imsNDRsTotalOutbound	1.3.6.1.4.1.311.1.1.3.1.1.3.17	INTEGER	read-only	The total number of Non-delivery reports generated for inbound mail
INT imsOutboundBytesPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.23	INTEGER	read-only	The hourly rate of bytes transferred to the Internet
INT imsOutboundConnectionsPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.26	INTEGER	read-only	The hourly rate at which outbound connections were made
INT imsOutboundMessagesPerHr	1.3.6.1.4.1.311.1.1.3.1.1.3.25	INTEGER	read-only	The hourly rate messages are transferred to the Internet
INT imsOutboundMessagesTotal	1.3.6.1.4.1.311.1.1.3.1.1.3.21	INTEGER	read-only	The total number of outbound messages delivered to their destinations
INT imsQueuedInbound	1.3.6.1.4.1.311.1.1.3.1.1.3.15	INTEGER	read-only	The number of messages received from the Internet destined for MS Exchange Server
INT imsQueuedMTS_IN	1.3.6.1.4.1.311.1.1.3.1.1.3.1	INTEGER	read-only	The number of messages awaiting final delivery in MS Exchange Server
INT imsQueuedMTS_OUT	1.3.6.1.4.1.311.1.1.3.1.1.3.4	INTEGER	read-only	The number of messages waiting to be converted to Internet Mail format
INT imsQueuedOutbound	1.3.6.1.4.1.311.1.1.3.1.1.3.14	INTEGER	read-only	The number of messages from MS Exchange Server, that are queued to be delivered to the Internet
INT imsTotalFailedConversions	1.3.6.1.4.1.311.1.1.3.1.1.3.34	INTEGER	read-only	Total message format conversions between internet format and Exchange format that failed.
INT imsTotalInboundKilobytes	1.3.6.1.4.1.311.1.1.3.1.1.3.18	INTEGER	read-only	The total kilobytes of message data transferred into the MS Exchange Server
INT imsTotalInboundRecipients	1.3.6.1.4.1.311.1.1.3.1.1.3.30	INTEGER	read-only	Total number of recipients processed inbound since the Internet Mail Service was started
INT imsTotalKilobytesQueued	1.3.6.1.4.1.311.1.1.3.1.1.3.29	INTEGER	read-only	Total kilobytes of message data queued in the Internet Mail Service queues
INT imsTotalLoopsDetected	1.3.6.1.4.1.311.1.1.3.1.1.3.35	INTEGER	read-only	Total number of messages NDRd because they appeared to be looping infinitely.
INT imsTotalMessagesQueued	1.3.6.1.4.1.311.1.1.3.1.1.3.28	INTEGER	read-only	Total messages waiting in the Internet Mail Service queues
INT imsTotalOutboundKilobytes	1.3.6.1.4.1.311.1.1.3.1.1.3.19	INTEGER	read-only	The total kilobytes of message data transferred out of the MS Exchange Server
INT imsTotalOutboundRecipients	1.3.6.1.4.1.311.1.1.3.1.1.3.31	INTEGER	read-only	Total number of recipients processed outbound since the Internet Mail Service was started
INT imsTotalRecipientsQueued	1.3.6.1.4.1.311.1.1.3.1.1.3.32	INTEGER	read-only	Total number of recipients in the Internet Mail Service queues
INT imsTotalSuccessfulConversions	1.3.6.1.4.1.311.1.1.3.1.1.3.33	INTEGER	read-only	Total message format conversions between internet format and Exchange format that succeeded.
INT mtaAdjacentMTAAssociations	1.3.6.1.4.1.311.1.1.3.1.1.1.1	INTEGER	read-only	Adjacent MTA Associations is the number of open associations this MTA has to other MTAs.
INT mtaAdminConnections	1.3.6.1.4.1.311.1.1.3.1.1.1.6	INTEGER	read-only	Admin Connections is the number of Microsoft Exchange Administrator programs connected to this MTA.
INT mtaDeferredDeliveryMsgs	1.3.6.1.4.1.311.1.1.3.1.1.1.31	INTEGER	read-only	Deferred Delivery Msgs is the total number of deferred delivery messages currently stored in the MTA.
INT mtaFreeElements	1.3.6.1.4.1.311.1.1.3.1.1.1.4	INTEGER	read-only	Free Elements is the number of free buffer elements in the MTA pool.
INT mtaFreeHeaders	1.3.6.1.4.1.311.1.1.3.1.1.1.5	INTEGER	read-only	Free Headers is the number of free buffer headers in the MTA pool.
INT mtaThreadsInUse	1.3.6.1.4.1.311.1.1.3.1.1.1.7	INTEGER	read-only	Threads in Use is the number of threads in use by the MTA (does not include RPC threads). This number can be used to determine whether additional processors could be of benefit.
INT mtaTotalFailedConversions	1.3.6.1.4.1.311.1.1.3.1.1.1.34	INTEGER	read-only	Total Failed Conversions is the total number of messages which failed to be converted from one form to another since MTA initialization.
INT mtaTotalLoopsDetected	1.3.6.1.4.1.311.1.1.3.1.1.1.35	INTEGER	read-only	Total Loops Detected is the total number of messages detected to have looped since MTA initialization.
INT mtaTotalRecipientsQueued	1.3.6.1.4.1.311.1.1.3.1.1.1.32	INTEGER	read-only	Total Recipients Queued is the total number of recipients specified in all messages currently stored in the MTA.
INT mtaTotalSuccessfulConversions	1.3.6.1.4.1.311.1.1.3.1.1.1.33	INTEGER	read-only	Total Successful Conversions is the total number of messages successfully converted from one form to another since MTA initialization.
INT mtaWorkQueueLength	1.3.6.1.4.1.311.1.1.3.1.1.1.8	INTEGER	read-only	Work Queue Length is the number of outstanding messages in the Work Queue, which indicates the number of messages not yet processed to completion by the MTA.
INT mtaXAPIClients	1.3.6.1.4.1.311.1.1.3.1.1.1.10	INTEGER	read-only	XAPI Clients is the number of XAPI clients connected to the MTA using the XAPI MA/OM interface. A single client may have multiple XAPI client sessions.
INT mtaXAPIGateways	1.3.6.1.4.1.311.1.1.3.1.1.1.9	INTEGER	read-only	XAPI Gateways is the number of gateways connected to the MTA using the XAPI MT/OM interface. A single gateway may have multiple XAPI gateway sessions.
TimeTicks (3)
TIK connLastInboundAssociation	1.3.6.1.4.1.311.1.1.3.1.1.2.1.17	TimeTicks	read-only	Last Inbound Association is the time (secs) since the last time an inbound (remote initiated) association for this entity was active.
TIK connLastOutboundAssociation	1.3.6.1.4.1.311.1.1.3.1.1.2.1.18	TimeTicks	read-only	Last Outbound Association is the time (secs) since the last time an outbound (locally initiated) association for this entity was active.
TIK connOldestMessageQueued	1.3.6.1.4.1.311.1.1.3.1.1.2.1.12	TimeTicks	read-only	Oldest Message Queued is the time (secs) since the oldest message in this entity's queue was placed in the queue.
No type (10)
connmSExchangeMTA_ConnectionsEntry	1.3.6.1.4.1.311.1.1.3.1.1.2.1		not-accessible	Performance information for one particular instance of 'mSExchangeMTA-Connections' object.
connmSExchangeMTA_ConnectionsTable	1.3.6.1.4.1.311.1.1.3.1.1.2		not-accessible	A table containing performance information for instances of 'mSExchangeMTA-Connections' objects.
microsoft	1.3.6.1.4.1.311
mSExchangeIMC	1.3.6.1.4.1.311.1.1.3.1.1.3
mSExchangeMTA	1.3.6.1.4.1.311.1.1.3.1.1.1
os	1.3.6.1.4.1.311.1.1.3
performance	1.3.6.1.4.1.311.1.1.3.1.1
software	1.3.6.1.4.1.311.1
systems	1.3.6.1.4.1.311.1.1
winnt	1.3.6.1.4.1.311.1.1.3.1

RFC description

Microsoft Windows NT Exchange MTA performance monitoring tracking message throughput, connections, thread usage, and buffer availability metrics.

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Download WINDOWS-NT-PERFORMANCE-EXCHANGE

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What Is WINDOWS-NT-PERFORMANCE-EXCHANGE?

What Can Be Monitored

Supported Devices

Monitoring Examples

RFC description