Postfix problem - cannot connect for outgoing mail

Hello,

I am having issues getting a migrated cpanel domain to send mail. (centos 6.2 / 3.89.gpl) I have searched but cant find anything that works.. There are errors below.. Any ideas how to fix this?

Also if i recheck virtualmin config i get this:

No sender canonical map file for outgoing addresses was found in your Postfix configuration. You should either add the appropriate map to Postfix, or disable this feature in Virtualmin's module config page.

I also noticed that postfix keeps going down, must restart...

Thanks a lot!

My mail log:

Jan 8 02:00:20 mail01 postfix/postfix-script[16011]: starting the Postfix mail system Jan 8 02:00:20 mail01 postfix/master[16012]: fatal: open lock file /var/lib/postfix/master.lock: unable to set exclusive lock: Resource temporarily unavailable Jan 8 02:05:02 mail01 postfix/sendmail[16455]: warning: the Postfix sendmail command has set-uid root file permissions Jan 8 02:05:02 mail01 postfix/sendmail[16455]: warning: or the command is run from a set-uid root process Jan 8 02:05:02 mail01 postfix/sendmail[16455]: warning: the Postfix sendmail command must be installed without set-uid root file permissions Jan 8 02:05:02 mail01 postfix/pickup[14191]: D41FF61341: uid=501 from= Jan 8 02:05:02 mail01 postfix/cleanup[16463]: D41FF61341: message-id=20120108070502.D41FF61341@targetmyad.net Jan 8 02:05:02 mail01 dkim-filter[15080]: D41FF61341: no signature data Jan 8 02:05:02 mail01 postfix/qmgr[30197]: D41FF61341: from=root@targetmyad.net, size=3774, nrcpt=1 (queue active) Jan 8 02:05:03 mail01 spamd[22348]: spamd: connection from localhost [127.0.0.1] at port 57501 Jan 8 02:05:03 mail01 spamd[22348]: spamd: setuid to target succeeded Jan 8 02:05:03 mail01 spamd[22348]: spamd: processing message 20120108070502.D41FF61341@targetmyad.net for target:501 Jan 8 02:05:03 mail01 spamd[22348]: spamd: clean message (0.0/5.0) for target:501 in 0.3 seconds, 3816 bytes. Jan 8 02:05:03 mail01 spamd[22348]: spamd: result: . 0 - NO_RELAYS,TVD_SPACE_RATIO scantime=0.3,size=3816,user=target,uid=501,required_score=5.0,rhost=localhost,raddr=127.0.0.1,rport=57501,mid=20120108070502.D41FF61341@targetmyad.net,autolearn=ham Jan 8 02:05:03 mail01 postfix/local[16466]: D41FF61341: to=target@targetmyad.net, orig_to=, relay=local, delay=0.61, delays=0.11/0.01/0/0.49, dsn=2.0.0, status=sent (delivered to command: /usr/bin/procmail-wrapper -o -a $DOMAIN -d $LOGNAME) Jan 8 02:05:03 mail01 postfix/qmgr[30197]: D41FF61341: removed Jan 8 02:05:03 mail01 spamd[22325]: prefork: child states: II