first off: I've just started with zimbra and it looks great so far, kudos on the hard work.
I'm testing zimbra on a server in my domain that doesn't have any real domains MX'ed to it. To get some messages flowing I have my own mail forwarded from our production mail server to my address @ the hostname of the test zimbra server. In zimbra I have the hostname of the machine defined as a domain as an alias for the domain my user account is in. This seems to be creating a configuration that postfix is unhappy about (although the mail gets routed correctly). It produces this error in the log:
Mar 18 10:03:58 trweb2 postfix/trivial-rewrite: warning: do not list domain hostname.domain.com in BOTH mydestination and virtual_alias_domains
If I want zimbra to accept mail for the local machine's name and forward it to a specific domain in zimbra, is there a better way to do it?
A related question: given that another MTA won't coexist with zimbra, how can I configure the system so that local mail (like logwatch and cronjob output) gets delivered? Does it work to symlink /etc/alternatives/mta to /opt/zimbra/postfix/sendmail?