I want to move an existing email setup in one of my friends place to Linux /OSS. Currently it is done using WInXP and Postmaster vpop mail server. ICS is enabled and clients can browse the net without using any proxy.

I am thinking of using FC6, Sendmail, Squid/IP Tables combination. The problem here is, that he has a domain name and email space with one service provider. This service provider gives an pop based email accont that is a "catch-all" account. VPOP does it brilliantly. It retrieves the emails from this email account and distributes it among the locally created email boxes.

I am unable to figure out how to do this with sendmail/fetchmail combination.

All I get from Googling is that fetchmail fetches individual emails. I dont understand how it distribues the mails specified for a particular user. Also, it has to be run by a particular user and not as a daemon. I want to understand the way we can retrieve the emails from the catch-all account and distribute it among local mailboxes.

Thanks for any inputs,

ricc