This INTEGER object chooses the response code this SMTP policy's proxy sends when nuisance mail is detected, either ok(250) to silently accept-and-drop or failed(554) to explicitly reject. An administrator picks failed to bounce spam visibly back to the sending server under this policy, or ok to quietly discard it. For example, setting csOrionFwSmtpPolicySpamReply to failed(554) would explicitly reject suspected spam mail handled under this policy.