[Dovecot] Problem with IMAP on port 993

[Brian Candler]

On Mon, Mar 29, 2010 at 10:48:00AM -0400, Jerry wrote:
> I am using IMAP with Dovecot. Claws-mail is my MUA. Now, when fetching
> mail via port 143, everything works fine:
> 
> Mar 29 10:33:00 imap-login: Info: Login: user=<user at domain.net>, method=CRAM-MD5, rip=127.0.0.1, lip=127.0.0.1, TLS
> 
> However, when I attempt to fetch mail via port 993, I get this message
> in the log:
> 
> Mar 29 10:28:35 imap-login: Info: Disconnected (no auth attempts): rip=127.0.0.1, lip=127.0.0.1, TLS handshaking: Disconnected

Try connecting like this:

    openssl s_client -connect 127.0.0.1:993

If it connects OK, then try sending some IMAP commands:

    a login user at domain.net yourpassword
    a examine inbox
    a logout

If that's OK, then your MUA may have disconnected without sending anything.
Perhaps it rejected your certificate? Or your MUA might be trying to connect
using non-SSL IMAP on port 993? Maybe it only supports STARTTLS for SSL,
in which case you'd use this on port 143.

HTH,

Brian.