Joseph, This same thing caused me no end of frustration when I first installed ASSP because I couldn't quite grasp what was going on. Now that I "get it" it really isn't all that difficult, but I understand where you are coming from.
Inbound, I don't see where you would need postfix. Use the default SMTP server on exchange so: Internet ==> ASSP ==> Exchange SMTP And outbound: Client ==> Exchange ==> ASSP ==> Postfix SMTP ==> Internet Where I ran into difficulties putting this all together was the addition of a "smart host" to the SMTP server on Exchange to get mail flowing properly. That had to be pointed to ASSP (someone correct me if I'm wrong, going from memory) so that ASSP could do whitelisting. The remaining configuration was fairly straightforward and I think you have it right, other than I would skip Postfix inbound. You could replace Postfix with any SMTP server (I use an additional one on the Exchange server for outbound delivery.) HTH. - Bob Coffman -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Joseph L. Casale Sent: Wednesday, January 16, 2008 8:09 PM To: '[email protected]' Subject: [Assp-user] Relay Host and smarthost I am a little confused about the 'Relay Host' parameter. What exactly does ASSP do with this switch as far as its behavior is concerned? I was using ASSP with very good success in front of an Exchange server which uses an ISP that requires a smarthost (port 25 outbound blocked). In that config it correctly proxy's my isp's smarthost for my exchange server. Now I must configure another setup which doesn't use a smarthost (in that sense), so the Linux server that is running ASSP will have Postfix on it to route external mail. Looking at the flow diagrams, I believe to leverage all of ASSP's features, I will need the following: Client -> Exchange -> ASSP -> Postfix -> internet And Internet -> ASSP -> Postfix -> Exchange *or* Internet -> ASSP -> Exchange Postfix is listening on 10025, when I telnet to x.x.x.x:10025 I see the Postfix banner and when I telnet to x.x.x.x:25 I also see it (I recon this is correct). I have the following configured: Network Setup -> SMTP Listen Port -> 25 Network Setup -> SMTP Destination -> 127.0.0.1:10025 If I understand correctly, incoming mail will See ASSP and transfer to Postfix here which will route to my exchange server. Relaying -> Relay Port -> 225 Exchange will connect here, and I will need ASSP to proxy back to Postfix. I guess I need Relaying -> Relay Host -> 127.0.0.1:10025 If that's correct, am I also correct in guessing that whitelisting etc is performed based on the mail coming in through "Relay Port" and this is how it makes the distinction, versus ASSP handling mail in and out through one port? Thanks! jlc ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Assp-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/assp-user ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Assp-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/assp-user
