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USER000099's profile

New Member

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10 Messages

Thursday, March 16th, 2023 10:09 PM

SMTP SMS to my ATT cell phone [email scrubbed] fails with 554 5.1.0 ... has no MX or A record , stat=service unavailable

I try sending SMS from one of my corporate work systems , sending email to my work email works fine , but sending SMS to my callphone ( for alerting ) does not work .  It used to work a month ago. My IT SMTP department says that they did not change anything and that the 554 5.1.0  indicates that the recepient  is rejecting it .

internalrelay01m sendmail[49863]: 32DH4FpQ000577: to=< 9999999999 @txt.att.net>, delay=00:00:01, xdelay=00:00:01, mailer=esmtp, tls_verify=OK, tls_version=TLSv1.2, cipher=                   , pri=121200, relay= mx3a.txt.att.net. [166.216.149.129], dsn=5.1.0, reply=554 5.1.0    (SERVER NAME.CORP.COMPANY NAME .com has no MX or A record, stat=Service unavailable

ACE - Expert

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64.7K Messages

1 year ago

Yes, the email is being rejected because ATT does not recognize the sending email domain. Perhaps your IT department didn’t change anything but your company email is no longer recognized as a legitimate email domain.

Community Support

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229.6K Messages

1 year ago

Hello, @USER000099. Thank you for reaching out to us about your email-to-text messages coming back rejected. We understand how important it is to be able to send and receive your email-to-text messages, especially if this is needed for work. 

 

That trend can be one of a couple of factors:

  • The mobile number isn't provisioned to receive SMS. If you're not receiving any SMS messages then you will want to check that there hasn't been any recent changes to the account to stop the delivery of SMS messages.
  • The end-user blocked the sender's address or domain. You will want to check that you haven't disabled SMTP messaging. That error message you're receiving means the recipient has blocked incoming email-to-text messages. That restriction will need to removed before these kind of messages can be successfully delivered to the recipient.

Also, try resolving that trend by composing a new email and enter the recipient's 10-digit wireless number, followed by @mms.att.net. For example, 5551234567@mms.att.net. It is likely that changing the format will resolve that trend on your device.

 

What's more, please be advised that the design of the SMTP gateway allows for personal or one-to-one messages. When using the SMTP gateway for one-to-multiple or group messaging it often replicates spam behavior and may be blocked or limited by AT&T network protection controls.

 

The SMTP gateway is subject to millions of abusive messages daily and AT&T employs technologies to protect our customers and block unsolicited messages.

 

Give this a try and let us know how this worked for you. 

 

TT, AT&T Community Specialist

Community Support

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229.6K Messages

11 months ago

We understand the urgency and importance of making sure that your email-to-text messages are not rejected, @USER000099.
 
Special thanks to our ACE, sandblaster, for their great expertise.
 
We want to turn your experience around, because we value your time greatly. Let's meet in a Direct Message on this together, making sure that your device is provisioned correctly for email-to- text and take the proper steps for a positive resolution. Please check your Direct Message inbox (it's the chat icon next to the bell icon in the upper right corner of the Forums).

 

We look forward to stepping in to help. Thanks for reaching out to AT&T Community Forums!

 

Nelson, AT&T Community Specialist.

ACE - Expert

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64.7K Messages

11 months ago

@USER000099 Apparently ATTHelp can not issue another DM invite on a thread that already had one. You will need to open a new thread to get a new DM invite.

Community Support

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229.6K Messages

11 months ago

Hi USER000099, it's Nelson from AT&T here. I am following up with you, regarding making sure your email-to-text messages are not rejected. We will need a few more details to get started with assisting you. We will need to verify your account. Please provide us a good contact number. If you prefer to keep this interaction in a Direct Message instead, please DO NOT provide your phone number. We can send you a link to help verify your account. Please feel free to reach out at your earliest convenience. I am available Sunday-Thursday at 8:30AM-4:30PM CST. Thank you, and we look forward to assisting further. Nelson, AT&T Community Specialist

New Member

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10 Messages

11 months ago

Hello Nelson can you please respond back I am still having the issue

New Member

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1 Message

9 months ago

Having this same issue with multiple FirstNET devices, all receiving the same massage from our Public Safety CAD system. This issue started today 5/17/2023. All settings are the same and haven't been changed for the last 3years. What's going on?

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