formmail.pl - What hack is this?

["John Palmer (NANOG Acct)" <nanog () adns net>]

Anyone hear of some sort of a cracking method that uses cgi-bin/formmail?
I've seen alot of these in my httpd/access_log files
lately. I don't have formmail.pl anywhere on my system - I flushed all of
the cgi-bin stuff that came with apache a long time ago.

John