Vista, secure imap and firewalls?

[Steinar Bang <sb@dod.no>]

Platform: Vista Enterprise SP1
	  GNU Emacs 22.3.1 (i386-mingw-nt6.0.6001) of 2008-09-06 on SOFT-MJASON
	  No Gnus v0.11 (CVS checkout from yesterday)
	  openssl using SUA, from http://suacommunity.com

Cygwin didn't install for me on Vista, so I had to look for another
source for openssl.  I found the Services for Unix Applications (the
built-in POSIX-thingy in Windows) and enabled it, and downloaded and
installed everything from the SUA community (see URL above).

I have a home computer running dovecot and listening for IMAPS
connections on port 993.  I can connect to this dovecot server from this
Vista machine.  But I can't connect with gnus.

Nor can I connect using the command line command
  openssl s_client -connect homeserver.dyndns.org:993
from a cmd shell on this Vista machine.

The command connects fine, using SUA community openssl, from a Win2008
Server running in a different network, but that is potentially a
different binary, since the 2008 Server is an AMD64 machine.

So I have currently two theories:
 - There is a firewall either on the Vista machine or on the network I'm
   connectiong in (but if so: why is Thunderbird successful in talking
   on that port?)
 - The openssl client on the Vista machine is broken

Any other theories?  Other tips and tricks I could try?

Does anyone successfully connect to an IMAPS server from a Gnus on a
Vista machine?  What about other windowsen?

If so: what openssl do you use?  Are anyone else running SUA community
opensssl? 

Thanx!


- Steinar