Sending txt from pc to cell using txt.att.net fails
When using the att text gateway (txt.att.net) message bounces with a Postmaster error message. This service had been working up to a few weeks ago. Also tried using image gateway (mms.att.net) which also failed, but did work one time with almost an hour delivery delay. No blocks set on recipients phone, also same failures seen on 2 different pcs.