mtaGroupInboundErrorCount
mta Group Inbound Error Count
1.3.6.1.2.1.28.5.1.1
Count of the number of errors of a given type that have been accumulated in association with a particular group while processing incoming messages. In the case of SMTP these will typically be errors reporting by an SMTP server to the remote client; in the case of X.400 these will typically be errors encountered while processing an incoming message.
Back to MTA-MIB MIB page.