I also followed a version of that howto and am trying to add mailman.
So far, I've done:
- aptitude install mailman
- newlist mailman
- added the output of newlist mailman to /etc/aliases.
- uncommented the line re spamassassin in /etc/mailman/mm_cfg.py
- used phpmyadmin to create the domain example.com (and added same to my dns server and the apache config for example.com)
and now I've reviewed /etc/mailman/postfix-to-mailman.py and /usr/share/doc/mailman/README.Debian and other online mailman documentation and I'm a bit stumped about which way to go from here. I'd rather not mess up my working mailserver, but clear instructions on adding mailman to Debian/Ubuntu systems using postfix with virtual hosts and mysql are hard to come by... Anyone know how to proceed from here? I'm not using ISPConfig.