I had postfix setup on my gateway to filter spam by using relay_recipient_maps to stop any e-mail addressed to a user that did not exist.
Postfix had no mail accounts setup. All mail was forwarded depending on it's domain to one of 2 other mail servers elsewhere on the network.
After much hair pulling I got transport_maps to work with Zimbra but for the last 20 hours, serching the wiki and googling myself to death I can not get relay_recipient_maps to work hence all inbound e-mail is stopped at the gateway with Zimbra saying "User unknown in local recipient table".
I'm using zcs-5.0.11_GA_2695. There does seem to be a persistant ( it servives a restart) relay_recipient_maps = hash:/opt/zimbra/postfix-18.104.22.168z/conf/relay_recipients entry in main.cf, but it is completely ignored.
PLEASE HELP ! ! !
How do I make relay_recipient_maps work with Zimbra , how do I get Zimbra to forward e-mail to the right internal server with no Zimbra accounts setup.