Do not connect when the SSL settings can't be used (suggested by Till Maas) For example, when mcabber is linked against GnuTLS it won't connect if 'ssl_verify' is not set to 0, as this is currently not supported.

[Desktop Entry]
Encoding=UTF-8
Type=Application
Name=MCabber
GenericName=Jabber IM Client
Comment=Console Jabber Client
Exec=mcabber
Terminal=true
Categories=ConsoleOnly;System;Network;InstantMessaging;Chat;