do you have the hostname in your /etc/hosts file ?   I'm not familiar
with Zimbra, but this is sufficient for many other programs which need
to find the hostname from an IP.

/etc/hosts ile has only local host ip and bogus ip . pls  see below.

[root@mailgw etc]# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1               localhost.localdomain localhost
192.168.100.3          mailgw.la-marge.com la-marge.com

should I write the internet ip to that file?


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Thank you
Indunil Jayasooriya