I have been putting together a new mail server using Postfix for delivery and
Courier for pickup. We are using a mySQL database for virtual users and have
been trying to get everything to use that database for authentication.

I had Courier working fine for authentication but had trouble getting SMTP
authentication working until I installed Dovecot. Unfortunately after that
install, I can no longer collect mail via Courier when TLS is enabled.

The error I receive in the client is:

Thunderbird can't connect securely to XXX.XXX.XXX.XXX because the site uses
a security protocol which isn't enabled.

The error in the maillog is: 

Nov 23 09:48:24 hostname imapd: couriertls: connect: error:1408A10B:SSL
routines:SSL3_GET_CLIENT_HELLO:wrong version number

I am at a loss as to what this error means, I have tried all the possible
values in TLS_PROTOCOL and TLS_STARTTLS_PROTOCOL variables in the config
file. I have tried installing the lastest version of courier, dovecot and
openssl. I tried deinstalling dovecot but the change made is obviously
irreversible as it had no effect on this issue.

Is anybody able to help me figure out what is going on here?

Some extra information about the server:
FreeBSD 6.2-RELEASE-p4
courier-authlib-0.59.3
courier-authlib-base-0.58_2 
courier-authlib-mysql-0.59.3 
courier-authlib-vchkpw-0.60.2
courier-imap-4.2.1,1 
dovecot-1.0.7
postfix-2.4.5,1


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