Zimbra+Mailman Integration Warning

[vavai]

Hi,

I've successfully integrating Zimbra 6.0.8+Mailman on SLES 11 SP1 64 bit, but I have a weird warning after updating the main.cf (by using zmlocalconfig).

As suggested on the mailman+zimbra integration thread, I add the following configuration onto /opt/zimbra/postfix/conf/main.cf using zmlocalconfig :

mydestination = localhost mydomain.co.id

virtual_alias_maps = proxy:ldap:/opt/zimbra/conf/ldap-vam.cf,hash:/var/lib/mailman/data/virtual-mailman

alias_maps = hash:/etc/aliases,hash:/var/lib/mailman/data/aliases

The above configuration working successfully but I got a weird warning in /var/log/zimbra.log :

Sep 6 22:00:30 zcs2 postfix/trivial-rewrite[22643]: warning: do not list domain mydomain.co.id in BOTH mydestination and virtual_mailbox_domains

If I'm changing the line

mydestination = localhost mydomain.co.id

into

mydestination = localhost

Warning message gone away, but message for mailing list was undelivered.

What does the postfix/trivial-rewrite warning message means and does the warning has an impact to Zimbra performance? What is the best solution for removing the warning message and in other side, keep Mailman+Zimbra works without problem?

[vavai]

Any suggestion for the above case will greatly appreciated.

Another question : Does the trivial-rewrite warning could harm the speed of sending and receiving emails ?