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Wednesday, May 16, 2012

How do I? Sendmail Relay to Exchange Auth GSSAPI

Hello!



I've seen other posts around the net asking something similar with no responses, so I'm assuming this might be fairly complex and require somebody with advanced abilities.



This is my first post here! I've been using various distros (RH, OpenSuse, Ubuntu) for maybe 10 years now so I'm somewhat familiar but venturing into new areas lately.



I've successfully configured sendmail to relay through other servers but now I'm having an issue with an Exchange server I do not have control over requiring GSSAPI for authentication.



I've been doing a lot of reading and it does not look like sendmail supports NTLM, which was the other option thus making the default choice GSSAPI.



I'm more than happy to read documentation, but this might be easier. I keep reading documentation only to later learn I just spent hours reading something that in the end is not what I need.



So, in a nutshell, does anybody has experience authenticating against Exchange as a relay using GSSAPI or the expertise to know how?



I have SASL2-2 installed and Sendmail 8.14.3 running. Again, I can relay to other servers, just not the one requiring GSSAPI.



I've requested an connector to be setup, just for this IP but it doesn't look like that's going to fly.



Thanks!











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