i am considering loading squirrelmail on my new Cobalt RaQ4r. i am renting this from http://www.4webspace.com. are there any know conflicts with the RaQ4's? would this completely replace the sendmail currently on my raq4? will i no longer be able to set up email accounts through the existing raq4 gui interface? will this work with the raq gui at all?

I thought squirrelmail was just a web-based email reader script(s), I have to look for it and see what it does specifically.

SquirrelMail will complement your mail on your server by providing a web-based interface for you to read your mail, send, synchronise your IMAP accounts, etc. etc. and offer news reading too if you have an NNTP server account. So SquirrelMail needs Sendmail on your RaQ.

You should e-mail direct to their mailing lists with such a question as they would be in a far better position to answer your questions than we are (particularly regarding such software).