Testing w/out killing existing mta etc

[pyperdown]

We have a fairly vanilla mail setup - postfix, cyrus-imapd, spamassassin, openldap, etc...

I would very much like to try out zimbra, but cannot blow away production system...

What is the best way to get zimbra to coexist? The main piece I want is the web client plus calendaring...

[gnyce]

Pretty much same scenario here - I added transports to postfix' main.cf:

transport_maps = hash:/etc/postfix/transport

then to the transport file added:

# test user on zimbra box
testuser@mydomain.com smtp:[192.168.1.50]
#everyone else
mydomain.com smtp:[192.168.1.51]

That way, postfix forwards mail to zimbra users to Zimbra. Then in Zimbra, you forward all mail to your postfix MTA server and let it decide where it should go... Internet, other mail server, etc. If the user is local to Zimbra (e.g. testuser and testuser2), Zimbra will hang onto it.

hth,
Greg