[horde] Mail server test failing.

[Michael Christopher Robinson]

Mail Server Support Test
ERROR - The server returned the following error message:

Mail server closed the connection unexpectedly.

Please note that I have ssl = required on the dovecot side.
The server is CentOS 6.x based with stock dovecot.
I've followed other tips to get secure imap working and I
can access the imap server from evolution.