change password without shell access

[Perttu Laine]

Hello!

I'm looking tool for freebsd that allows user to change their password
without access to server. If there are any? We're running mail server with
nologin account and would like to let users change their password. From www
would be preferred way. And possibly to change their .forward file too. So
are there any tools for this?

-- 
kpn @ IRCnet