problem with dovecot/lmtp

[Dan LaSota]

I am getting this in my errorlog for postfix/dovecot

Mar  2 16:42:14 mail postfix/error[5074]: A689580F236: to=<root at mail.example.com>, relay=none, delay=21420, delays=21420/0.05/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to mail.example.com[private/dovecot-lmtp]: Connection refused)

From my reading, I believe this has something to do with virtual_transport which I have set to:
virtual_transport = lmtp:unix:private/dovecot-lmtp

The socket file, exists:

[root at mail ~]# ls -l /var/spool/postfix/private/dovecot-lmtp
srw-------. 1 postfix postfix 0 Mar  2 09:14 /var/spool/postfix/private/dovecot-lmtp

But I'm a little stumped as how to proceed.

The only thing I think I understand is that postfix is trying to talk to dovecot-lmtp and dovecot-lmtp is refusing the connection.
Am I reading that correct?
What can I do about it?

Thanks,

Dan LaSota
Instructional Designer, UAF eLearning
(907) 451-4067
dan.lasota at alaska.edu
http://elearning.uaf.edu