still not working, so what I did is, I sent the emails to an email address on my exchange system and then I'm forwarding those emails to number@txt.att.net
So I got it to work that way, I'm just bummed that the relay doesn't work.
Dan
ASKER
Thanks for the response, I found a work around as I've spent so much time.
Just adding a note here, if you want full anonymous relay, you can set up a secondary receive connector in Exchange, then configure it to use Externally Secured authentication. This will remove the limitations on relaying. I would not recommend setting the port to 25, though, and definitely don't open the port you use to the internet, as you'll quickly become blacklisted by doing so. I wrote a blog on this a while back: https://acbrownit.wordpress.com/2012/05/02/exchange-2010-relaying-how-to-use-it-how-to-turn-it-off/