Hello, I have a client that wants us to setup the Postfix SMTP server on their web server to use authentication when relaying through their Exchange server (even though both are on the same local network). I'm working on just getting them to allow relay from the web server IP address, but in the meantime...
The exchange server only offers "AUTH NTLM" in the EHLO greeting. I did a little searching and I'm having trouble finding out whether Postfix (well, I guess Cyrus) supports NTLM authentication. I've looked through the SASL_README and I can see how to enable SASL auth (BTW, "postconf -A" lists cyrus), but I guess I'm trying to find out a way to test it manually outside of Postfix before I make the change in the Postfix config. I see in the SASL_README how you can test AUTH PLAIN authentication, but I don't see anything about NTLM (not fully understanding NTLM myself, it seems to be challenge-response protocol, so the same testing method wouldn't work). Remember that I only need outgoing NTLM authentication for the SMTP client (not incoming NTLM), as this server is simply relaying all emails to the Exchange server. Is this something that would be more appropriate on the Cyrus list? Justin Pasher
