[ZMilton]

I have a problem very serious with my server Zimbra because when I start the zmcontrol and appears the next:
antispam Running
antivirus Running
ldap Running
logger Running
mailbox Running
mta Stopped
postfix is not running
snmp Running
spell Running

And when I check the maillog appears:

postfix/postqueue: fatal: Queue report unavailable - mail system is down

And in the zimbra.log of messages appears this:

Apr 11 00:08:04 mail zimbramon[17471]: 17471:info: 2008-04-11 00:08:01, STATUS: mail.interforest.com.pe: antispam: Running
Apr 11 00:08:04 mail zimbramon[17471]: 17471:info: 2008-04-11 00:08:01, STATUS: mail.interforest.com.pe: antivirus: Running
Apr 11 00:08:04 mail zimbramon[17471]: 17471:info: 2008-04-11 00:08:01, STATUS: mail.interforest.com.pe: ldap: Running
Apr 11 00:08:04 mail zimbramon[17471]: 17471:info: 2008-04-11 00:08:01, STATUS: mail.interforest.com.pe: logger: Running
Apr 11 00:08:04 mail zimbramon[17471]: 17471:info: 2008-04-11 00:08:01, STATUS: mail.interforest.com.pe: mailbox: Running
Apr 11 00:08:04 mail zimbramon[17471]: 17471:info: 2008-04-11 00:08:01, STATUS: mail.interforest.com.pe: mta: Stopped
Apr 11 00:08:04 mail zimbramon[17471]: 17471:info: 2008-04-11 00:08:01, STATUS: mail.interforest.com.pe: snmp: Running
Apr 11 00:08:04 mail zimbramon[17471]: 17471:info: 2008-04-11 00:08:01, STATUS: mail.interforest.com.pe: spell: Running


Also run the command postqueue -f but I can't
appears this : postqueue: fatal: Cannot flush mail queue - mail system is down