On 3/22/2012 9:33 PM, Alex wrote: > Hi, > > I am trying to build a relay server using postfix-2.8.7 on fedora16 > for one domain and a few sub-domains. This server should only accept > mail from two specific public-facing postfix servers that accept mail > for these domains, process the mail with amavisd/spamassassin, then > forward the resulting mail to this relay server. > > Once the mail has been received by this relay server, it should > forward it into the internal Exchange server for the end-users. > > Do I just define a few transport maps for this? Currently I have this: > > mailrelay.example.com local: > example.com smtp:mail.example.com > dom1.example.com smtp:smtp.dom1.example.com > .dom1.example.com smtp:smtp.dom1.example.com > > Since this server isn't reachable by any hosts other than the two that > are trusted, there aren't any local users, and no real decisions need > to be made, is there really anything else necessary to do this?
What prevents you from simply relaying the mail from the first two Postfix hosts directly to the Exchange server, instead of installing this unnecessary intermediate relay? It would be a much simpler solution, and cheaper, in hardware, power, cooling, management, etc. What is your design goal here? As stated, all you're doing is literally adding a temporary queue between the 2 Postfix and Exchange servers--mail comes in, mail goes out. I fail to see the benefit of such a setup. -- Stan
