Networks

Ask something
Question Locked

Email blacklisting

0 helpful
3 replies

by jason

Closed to new repliesThis discussion is closed. It stays readable, but it takes no new replies.

Is there some place I can go to see if our email server has been blacklisted?

We are having a problem with some emails comming back delivery delayed and others comming back undeliverable. Both are comming from people we email all the time.

Some of the undeliverables come back with this:
Requested #550 Requested action not taken: mailbox unavailable ##

1 going to att.net came back with this:
att.net #550-67.98.104.34 blocked by ldap:ou=rblmx,dc=att,dc=net 550 Error - Blocked for abuse. See http://att.net/blocks ##

3 replies

by bizzo

Have a look here http://worldnet.att.net/general-info/block_enduser.html for your error message, it's the last one on the list:

Explanation:
The sending system exhibited behavior associated with spammers and was blocked.

What to do:

After taking steps to mitigate their spam or virus problems, the adminstrators of affected systems can send unblock requests from http://www.att.net/general-info/bls_info/block_admin.html

They should be able to give you more information as to why they're blocking your mails.

This discussion is closed to new replies.