FORTIMAIL-MIB-300 :: fmlSysMailDiskUsage

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › FORTIMAIL-MIB-300 › fmlSysMailDiskUsage

fmlSysMailDiskUsage

Module: FORTIMAIL-MIB-300

OID (symbolic): FORTIMAIL-MIB-300::fmlSysMailDiskUsage

OID (numeric): 1.3.6.1.4.1.12356.1688.1.9

Node type: OBJECT-TYPE

Type: Gauge32

Access: read-only

Description: Instantaneous mail disk usage

What is fmlSysMailDiskUsage?

Reports how full the mail disk partition (queue/mailbox storage) is; if this fills up, FortiMail can stop accepting or delivering mail, so it's a key capacity alarm.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.12356.1688.1.9
snmpwalk -v2c -c public <target> FORTIMAIL-MIB-300::fmlSysMailDiskUsage

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.12356.1688.1.9.1
snmpget -v2c -c public <target> FORTIMAIL-MIB-300::fmlSysMailDiskUsage.1

Start monitoring Fortinet FortiMail email security gateway appliance (firmware 3.00) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the FORTIMAIL-MIB-300::fmlSysMailDiskUsage OID value, configure state conditions and alerts, and monitor any Fortinet FortiMail email security gateway appliance (firmware 3.00) from a single console.

OID Breakdown

Upper-level ancestors (9 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.12356fortinetFORTIMAIL-MIB-220
1.3.6.1.4.1.12356.1688fortimailFORTIMAIL-MIB-220
1.3.6.1.4.1.12356.1688.1fmlSystemFORTIMAIL-MIB-220
Numeric OIDNameModule
1.3.6.1.4.1.12356.1688.1.9fmlSysMailDiskUsageFORTIMAIL-MIB-300