Sending txt from pc to cell using txt.att.net fails

Hello mlaw66202, we're here to help with Email to SMS messaging.

First, do us a favor and try using our troubleshooting tool as it's very helpful with discovering why you're unable to receive email to text messages. It's easy, just visit our wireless support section and sign in to start a troubleshooting session on your device.

Also, we'd like to gather more details from you so we can provide further research if this error still persists:

• Are you not able to receive these messages from every contact? We want to know if all contacts are affected.
• Have you always had this difficulty? This information will help us locate when this occurred.  
• What emails are being used and what device do you have? These details will provide us with thorough guidance.

We look forward to your response!

Thank you for visiting AT&T Community Forums!

Carlton, AT&T Community Specialist 

The failure is the text message never gets from pc to cellphone, the message does not get through or beyond the at&t gateway. There is no problem with the receiving cellphone as the message never gets to it

 We only use the att gateway to send texts to one person. The failure occurs in trying to send a txt msg from a PC, primarily an Hp Pavillion desktop running windows 10 latest build with MS Edge also latest build. The gateway had been working for more than a year from this PC.  Once the failure occurred on the Hp I started testing from other devices, my generic PC and my T-Mobile cell phone.Using SMS from my cell and and another, also Android cell, sms and mms work fine.  The problem only occurs when attempting to EMAIL an sms or mms message via the txt.att.net or mms.att.net gateway servers. As I described earlier I can replicate the problem from another pc and 2 cell phones, using various WEB Browsers, i.e. Edge, Internet Explorer, Firefox, Samsung and DuckDuckgo for cellphone. Summarizing: emailing a text or multi media message via various internet browsers opening PC based MS Live.com on various web browsers or PC based MS Office Outlook, or using the Google store MS Outlook App, or misc internet browsers on 2 different cellphones, ALL of which replicate the ATT gateway failure.

You keep saying PC but the text gateway is for email to text. The gateway only accepts emails from a registered email domain. What email service are you using?

We want to help you get back to receiving messages from your email domain, @mlaw66202. 

Let's meet in a Direct Message on this. Check your Direct Message inbox (it's the chat icon next to the bell icon in the upper right corner of the Forums). 

@sandblaster asked a good question that may help us get to the bottom of why your messages aren't being delivered. Please share which email service you're using, and our community members will try to find a solution for you in the meantime. 

We'll chat soon! 

Sydne, AT&T Community Specialist

I have this problem.  I cannot send text messages to  [email scrubbed] or to [email scrubbed].

I am using a PC desktop with both LiveMail and gMail to send these messages. 

It is not the problem of my email clients.  I send to a variety of other cell phone carriers with no problem.

It is ATT's screw up somewhere.