Andrew asked:
I used to be able to send text messages from my office computer to a pair of my friends who have phones, Cingular. Now those messages are restituendi as undeliverable. I tried to convey a similar message to my own phone, Cingular and get the same message. Cingular has changed something in the department of sending text messages?
As cingular use to hava mms.cingular.net now as it changed back to att you have to change the address:
Put ur # or friends like this and it will work.
I am so sorry I dont know anything about it. I couldnt help you.