[Dovecot] Dovecot Virtual Users & Sendmail

[Chris Hogan]

Not directly Dovecot, but a configuration problem.

We have a working set-up with Dovecot+Procmail+Sendmail, using 
POP-before-SMTP. We want to be able to offer email accounts to some 
local schools, using SquirrelMail (keeps their costs & maintenance 
down). The whole arrangement is working, but we don't want to have to 
have 300+ School children as users of our
Red Hat Enterprise server, so I've set up a passwd style file for 
authentication.

This all works fine, they can access mailboxes & send emails, but to 
receive Sendmail is checking that they are unix users & bounces messages 
back if they aren't in  /etc/passwd too.

Has anybody ever got Sendmail working with Dovecot virtual users?

Or is it time I switched to Postfix?

Chris Hogan