On Wed, 06 Jun 2007 14:34:45 GMT, John Navas
<spamfilter1@navasgroup.com> wrote in
<n3hd635mt2g1cdq0mmp8ftq5kmn9m1dp62@4ax.com>:

>As part of the rebranding of Cingular to "Wireless from AT&T", the
>preferred email-to-SMS-message gateway address (even for Cingular
>customers) is now NUMBER@txt.att.net, or YOURID@txt.att.net if you're
>set up a personalized address in the Message Center
><http://www.wireless.att.com/learn//messaging-internet/>.

MMS gateway is NUMBER@mms.att.net (or YOURID@mms.att.net).

--
Best regards, FAQ FOR CINGULAR WIRELESS:
John Navas <http://en.wikibooks.org/wiki/Cingular_Wireless_FAQ>