I configured Zimbra in Ubuntu 8.0.4.Te zimbra version is
My problem is when i send mail the zimbra log is as follows
Jun 17 04:02:30 pop postfix/smtp: 4A1E980228E: to=<firstname.lastname@example.org>, relay=none, delay=334, delays=334/0.05/0/0, dsn=4.4.1, status=deferred (connect to 18.104.22.168[22.214.171.124]: Connection refused)
I can send mail locally.
The mx check using the Admin control panel was successful.
The zimbra version is Release 5.0.16_GA_2921.UBUNTU8 UBUNTU8 FOSS edition.
Pls help me.I have been trying to settle this problem for the past 28 hours.