I am interested in providing web based email access to my server. A couple of my clients are interested in this service. This would serve as alternative access when they could not use their POP3 mail client.

What are the options for running a web based email system on the Raq?

What are the security concerns?

What are the management/tech support issues?

I would appreciate specific product recs. and insights.

Thanks.

I like SquirrelMail from http://www.squirrelmail.org/

You can also check out this:
Popper
http://ractive.ch/popper/

Aloha
have not tried this yet but have used it at vservers

http://www.horde.org/imp/

worked well

I am also going to try the squirrel mail