[Pythonmac-SIG] problems with smtplib?

[Jack Jansen]

As Doug explained the problem is that your IP address doesn't have a
reverse mapping in the DNS database. While it is probably a good idea
to submit a bugfix to Guido, as it isn't smtplib's primary task to
play Internet Police, it is something you should get your sysadmin to
fix. There are lots of SMTP servers who will do a lookup/reverse lookup on
the hostname you pass with HELO and treat your messages as spam if the 
reverse lookup fails or doesn't match. There are also lots of other
problems you'll probably experience from your machine (like not being
able to connect to ftp.cwi.nl to get the latest version of
MacPython:-). 
--
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