mail server down during fatal: Queue report unavailable

[snake_eyes]

Hello,

I surprised today morning that the mail server is down, this is the log file of the zimbra log

Dec 29 08:05:00 mail postfix/postqueue[10494]: fatal: Queue report unavailable - mail system is down
Dec 29 08:05:00 mail zmmailboxdmgr[10503]: status requested
Dec 29 08:05:00 mail zmmailboxdmgr[10503]: status OK
Dec 29 08:05:00 mail zimbramon[8431]: 8431:info: Starting antispam via zmcontrol 
Dec 29 08:05:00 mail zimbramon[8431]: 8431:info: Starting antivirus via zmcontrol 
Dec 29 08:05:01 mail zimbramon[8431]: 8431:info: Starting snmp via zmcontrol 
Dec 29 08:05:01 mail zimbramon[8431]: 8431:info: Starting spell via zmcontrol 
Dec 29 08:05:01 mail zimbramon[8431]: 8431:info: Starting mta via zmcontrol 
Dec 29 08:05:13 mail postfix/postfix-script[11012]: warning: not owned by root: /opt/zimbra/postfix-2.4.7.5z/conf/main.cf
Dec 29 08:05:13 mail postfix/postfix-script[11026]: starting the Postfix mail system
Dec 29 08:05:13 mail postfix/master[11027]: fatal: bind 0.0.0.0 port 25: Address already in use
Dec 29 08:05:13 mail zimbramon[8431]: 8431:info: Starting stats via zmcontrol
ec 29 08:08:21 mail postfix/smtpd[12956]: disconnect from p1157-dpm05kyotmi.kyoto.ocn.ne.jp[118.7.31.157]
Dec 29 08:08:23 mail zmmailboxdmgr[13245]: status requested
Dec 29 08:08:23 mail zmmailboxdmgr[13245]: status OK
Dec 29 08:08:23 mail zmmailboxdmgr[13305]: status requested
Dec 29 08:08:23 mail zmmailboxdmgr[13305]: status OK
Dec 29 08:08:30 mail postfix/postqueue[13337]: fatal: Queue report unavailable - mail system is down
Dec 29 08:09:00 mail postfix/postqueue[13359]: fatal: Queue report unavailable - mail system is down
Dec 29 08:09:30 mail postfix/postqueue[13549]: fatal: Queue report unavailable - mail system is down

also when I try to send an email from outside I got an error message:

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 554 554 5.7.1 <username@domain.com>: Relay access denied (state 14).

what I did yesterday is I follow this instructions to disallow the really and spaming:
The SPF Setup Wizard
any help please?

Cheers,