MTA Stopped by itself

Hi,

I installed zimbra two weeks ago and the past weekend I found MTA stopped for no reason. I can not send email or receive email. I checked the log in /opt/zimbra/log and here's what I have:

Jun 20 11:10:01 mail postfix/postqueue[4000]: fatal: Queue report unavailable - mail system is down
Jun 20 04:10:01 mail zimbramon[3979]: 3979:info: 2009-06-20 04:10:01, QUEUE: 0 0
Jun 20 04:10:01 mail sendmail[4011]: n5KBA10N004011: from=zimbra, size=382, class=0, nrcpts=1, msgid=<200906201110.n5KBA10N004011@mail.abccompany .com>, relay=zimbra@localhost
Jun 20 04:10:01 mail sendmail[4011]: n5KBA10N004011: to=zimbra, ctladdr=zimbra (502/502), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30382, relay=[127.0.0.1] [127.0.0.1], dsn=4.0.0, stat=Deferred: Connection refused by [127.0.0.1]
Jun 20 04:10:02 mail zimbramon[3986]: 3986:info: 2009-06-20 04:10:01, DISK: mail.abccompany.com: dev: /dev/cciss/c0d0p3, mp: /, tot: 480291, avail: 401280
Jun 20 04:10:02 mail zimbramon[3986]: 3986:info: 2009-06-20 04:10:01, DISK: mail.abccompany.com: dev: /dev/cciss/c0d0p1, mp: /boot, tot: 99, avail: 77
Jun 20 04:10:03 mail zmmailboxdmgr[5121]: status requested
Jun 20 04:10:03 mail zmmailboxdmgr[5121]: status OK
Jun 20 04:10:04 mail zimbramon[3987]: 3987:info: 2009-06-20 04:10:01, STATUS: mail.abccompany.com: antispam: Running
Jun 20 04:10:04 mail zimbramon[3987]: 3987:info: 2009-06-20 04:10:01, STATUS: mail.abccompany.com: antivirus: Running
Jun 20 04:10:04 mail zimbramon[3987]: 3987:info: 2009-06-20 04:10:01, STATUS: mail.abccompany.com: convertd: Running
Jun 20 04:10:04 mail zimbramon[3987]: 3987:info: 2009-06-20 04:10:01, STATUS: mail.abccompany.com: ldap: Running
Jun 20 04:10:04 mail zimbramon[3987]: 3987:info: 2009-06-20 04:10:01, STATUS: mail.abccompany.com: logger: Running
Jun 20 04:10:04 mail zimbramon[3987]: 3987:info: 2009-06-20 04:10:01, STATUS: mail.abccompany.com: mailbox: Running
Jun 20 04:10:04 mail zimbramon[3987]: 3987:info: 2009-06-20 04:10:01, STATUS: mail.abccompany.com: mta: Stopped
Jun 20 04:10:04 mail zimbramon[3987]: 3987:info: 2009-06-20 04:10:01, STATUS: mail.abccompany.com: snmp: Running
Jun 20 04:10:04 mail zimbramon[3987]: 3987:info: 2009-06-20 04:10:01, STATUS: mail.abccompany.com: spell: Running
Jun 20 04:10:04 mail zimbramon[3987]: 3987:info: 2009-06-20 04:10:01, STATUS: mail.abccompany.com: stats: Running

any ideas?

Thanks

Harry

Did you do a zmcontrol stop and zmcontrol start?

I did not do anything, it stopped by itself.
I restarted zimbra and its running again.

I really don't know whats causing this and if it will happen again or not.

Unless I'm reading this wrong, you had a log entry at 11:10 and then the next line was from 04:10 the same day.. Did the time jump backwards for some reason on the server? That would signal bigger problems than Zimbra..