I recently installed Zimbra 4.5.0 GA on Ubuntu 6.06. I initially had a problem on port 25 which has been resolved (i think). The Zimbra ID daily sends messages to the admin account and these are not being delivered. They are continually queued in the deferred area. The message is:-
From Host: undefined
From domain: mydomain.org
From IP: undefined
To domain: mydomain.org
Content filter: smtp-amavis:[188.8.131.52]:10024
Reason: connect to 184.108.40.206[220.127.116.11]: connection refused
note: mydomain and 18.104.22.168 are substituted values.
I suspect that this problem is occurring with all incomming messages.
Any help is appreciated.
thanks & regards.