Today one of my user report problem that one of mail has not been delivered in his mail box,
I have checked the logs main logs(var/log/maillog), mail has been delivered in logs
Feb 26 03:10:10 zimbra postfix/lmtp: 9A78F13A0031: to=<email@example.com>, relay=zimbra.iabc.com[10.10.10.77]:7025, delay=4.4, delays=2/2.3/0.01/0.06, dsn=2.1.5, status=sent (250 2.1.5 OK)Feb
But when i run message trace command(with massage) it return 0 messages
[zimbra@]$ zmmsgtrace -i !&!AAAAAAAAAAAYAAAAAAAAAFIb0f0b5UBHkOVwRmUGJtjCgAA AEAAAAMH/sZTXRL1Nr0bJz0933cgBAAAAAA
0 messages found
The same messages has been delivered out side of the domain.
Is there any other logs that can could help. do you think long massage subject(and id) was issue.