[sylpheed:37170] Syhpheed 3.7.0 fails to connect to MS Exchange

[Anton Shepelev]

Hello, all.

After I upgraded my Sylpheed from 3.5.0 to 3.7.0 my local
Microsoft Exchange account stopped working:

   * creating IMAP4 connection to ex-07.###.##:993 ...
   ** LibSylph-WARNING: SSL_connect() failed with error 5, ret = 0 (error:00000000:lib(0):func(0):reason(0))

   ** LibSylph-WARNING: [12:44:18] Can't establish IMAP4 session with: ex-07.###.##:993

   ** Can't establish IMAP4 session with: ex-07.###.##:993
   ** LibSylph-WARNING: [12:44:18] Could not establish IMAP connection.

   ** Could not establish IMAP connection.

Gmail still works, using identical SSL setting:

   Use SSL for IMAP4 connection