We host several domains on linux servers, web, dns, etc… This includes primary and secondary postfix mail servers using virtual mappings for various domains. Beyond the dmz (along side?) I have a small local network running win2k3 for AD and exchange. I use a bcc table on postfix to forward mail internally to exchange for the primary domain. (The “primary” domain = that of the brick & mortar and AD domain) This way postfix can be used a virus & spam gateway for exchange on the inside, while still allowing people access to their mail from the outside.
This sort of works except that it leaves the same messages on both servers. You can see how this quickly becomes a mess. Is there a clever way to keep exchange and postfix in sync? So that mail doesn’t pile up on one or the other and users don’t have to delete the same email twice.
Or am I going about this completely wrong? Side note, I’m more comfortable on the linux side though I’m not windows hating fanatic.
Any help is appreciated, thanks.