Quick mailing list using Sendmail and Python
I've published a new Hack in http://wiki.e-shell.org. This one explains how you can create a little mailing list using only Sendmail aliases and a simple Python script.
It is a quick way to have a mailing list, without having to install and set up MailMan or Majordomo, and it would be easy to add more features to that simple script like, for example, a little archive or some content filtering.