Fix standard port for SSL/TLS

443 is of course the https and not the IMAPS standard port. Fix.

Thanks to Daniel Shahaf <d.s@daniel.shahaf.name> for the heads up.

Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>

offlineimap/imapserver.py

@@ -311,7 +311,7 @@ class IMAPServer:
             elif SSLError and isinstance(e, SSLError) and e.errno == 1:
                 # SSL unknown protocol error
                 # happens e.g. when connecting via SSL to a non-SSL service
-                if self.port != 443:
+                if self.port != 993:
                     reason = "Could not connect via SSL to host '%s' and non-s"\
                         "tandard ssl port %d configured. Make sure you connect"\
                         " to the correct port." % (self.hostname, self.port)