I am installing a new SharePoint Server Farm in my organization and also upgrading Exchange 2003 to 2010. I want to setup a Microsoft TMG Server as the Edge Server on a DMZ behind an existing ASA.
I plan on using the Edge to do reverse proxy roles for SharePoint and also handle Outlook Anywhere and OWA; the edge server will not be doing any spam filtering as my Barracuda will already do that.
Now my question is does this sound like a variable thing to do or should I just spend the extra money and have a second Edge Server.
Also, should the server be on the domain or not? I have read articles that say to do one or the other and I would image it would be best to not have it on the domain.
Any other thoughts are always appreciated.