Outlook 2011 to use SSLV3

Hi,

This is my first post. I dont have much experience with Macs. I've had a look through the settings but cant find what I need to use SSLV3. Recently we had our TMG gateway security increased to block SSLV2 as per this http://www.isaserver.org/articles-tutorials/configuration-security/improving-ssl-security-forefront-threat-management-gateway-tmg-2010-published-web-sites.html since then the mac users cannot access the our exchange when working from an external connection. The mac users are able to work ok when on the corp network as they arent hitting the TMG. Other users running Win7/8 with Outlook are working ok on and off the corp network. Webmail works ok externally as well.

I am trying to find out if there is a way to force Outlook 2011 to use SSLV3

I've checked the certificates and they are for Lync.

Thanks in advance.

Dave