I have been having trouble getting Exim4 running on my Debian sarge machine. It is now not receiving mail from remote hosts though it can send mail to remote hosts. Weird. Looking at the Exim wiki which is fair to decent in terms of info. Also on the exim4 mailing list on Alioth. Mostly developers there who answer questions in a very opaque style. Typical Debian.

I hope to use this as a resource for learning more about Debian and to post informatin that might be valuable to others.