Recommendation for webmail server software

[ripstop]

Okay, I'd like to set up my YDL server to autofilter my email (procmail
seems to be the tried and true method) and allow me to access my email
on the YDL box (which runs headless) from any of a number of various
systems that I'm on throughout the day via WWW. Does anyone here have a
recommendation for a solution for this (I've seen a few different pieces
of software on Freshmeat.net, but I'm unsure which way to go). 

Thanks a bunch!

Ripstop