caribguy - 11:16 pm on Jan 16, 2011 (gmt 0)
I set up a combo of qmail with vpopmail, courier-imap and clamav about 1 1/2 year ago and lost almost a week of my life messing with it. It now works perfectly, buy yeah... I do feel your pain!
For an interface to add users, domains, resize mailboxes, etc you could try qmailadmin.