The final thing you have to do is install qmail's POP3 daemon. It is split into three programs, one of which deals with user names and passwords. Those of you with shadow passwords installed will appreciate this modularity. How to do this is described in detail in the FAQ that comes with qmail. If you have hundreds of users for a virtual domain, you can avoid the hundreds of .qmail- xxx files with a small script that calls qmail's forward command.
Conclusions qmail appears to be a speedy and robust replacement for sendmail.
We've had qmail running on our Linux Internet server for many months now without a single glitch. The additional features provided by qmail could be useful to those of you hosting several virtual domains from a single Linux box, and the simpler configuration is an added bonus. Mike Thomas is an Internet application developer working for a consulting firm in Saskatchewan, Canada. Mike lives in Massachusetts and uses two Linux systems to telecommute 2000 miles to his job and to graduate school at the University of Regina.