Need abuse/postmaster contact for AT&T

Matthew Black Matthew.Black at
Thu Jan 29 15:45:15 UTC 2015

Our university just received notice from AT&T that our e-mail is being blocked without much explanation. As all universities send e-mail to the students and employees, it is impossible to tell what triggered AT&T's actions.

Does anyone have an AT&T contact? If you are from AT&T, please contact me off-line.


matthew black
e-mail postmaster
california state university, long beach

-----Original Message-----
From: test_reply at [mailto:test_reply at] 
Sent: Wednesday, January 28, 2015 4:58 PM
Subject: Blocked Email Notification

Dear Postmaster:

We are writing to let you know that we are blocking messages addressed to one of our customers at the domain by one of your customers at domain The stream of messages coming from your system appears to consist mostly of unwanted commercial e-mail (UCE, or "spam"). To protect our system and to ensure that it operates well for all of our customers, we have decided to block all messages originating from your system.

Please consult your logs to see what might be causing this situation and how it can be fixed. Then visit to request a removal of the block. Most requests for removal are honored within two days.

The specific error message received by your customer was:
550 Error - Blocked for abuse. See

Thank you for your assistance in helping our respective customers communicate.

Best regards,

The AT&T Mail Team.

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