SMTP question for 3rd acct

I have been using Mulberry since spring 2000.  I have a POP3 acct and an IMAP acct
each with their own SMTP accounts.  I just added another POP3 acct with its own
SMTP.  

It is not using its own SMTP but sending through the original POP3's SMTP.

A third toggle *does* show up in the Outgoing Queues, but it does not use the
correct one.  Having the toggle shows the new SMTP account is somewhat configured in
Prefs.

How do I get it to use its own SMTP acct?

Thanks,
AC

All accts are SSL
Mac OS X.6
Mulberry 4.0.8