Fwd: VPOPMAIL & DOVECOT & SMTP-AUTH

I am using Qmail and Dovecot for IMAP.  Prior to installing Dovecot we only
offered POP3 and SMTP services.
The issue I have run into is that after I installed Dovecot, IMAP runs fine,
but when my users go to send email they can't.

We are using POP-before-SMTP for SMTP auth.  Since there is no POP account
anymore no one can send outbound email.
We use vpopmail to manage all domain and virtual domains.

Is there a simple resolution to resolve this issue?  I have looked at
SMTP-AUTH but not sure it will work with vpopmail.

Thanks in advance!


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