Thanks for the help. This did solve my problem, and created a little hiccup.
Namely, all the users that had email account LOST their mail. I am just starting migrating to this new mail server setup, so mostly just insignificant testing emails. I am sure there is a way to recover the old mails? Doesn't matter, not really much there. -- Sent from: http://dovecot.2317879.n4.nabble.com/