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Thu, Jun 23, 2022 9:30 AM

Ip Unblock Request

Hello team,

Greetings of the day.


We are sending mails to Att. subscribers who have subscribed to our website.

But our mails are getting block from Att. I request you to please remove our ips and unblock them

I have mentioned the ip series below along with the error I am getting please check and remove the server from block list.

Error- smtp;553 5.3.0 flph835 DNSBL:RBL 521<​ >_is_blocked.For assistance forward this error to  abuse_rbl@abuse-att.net
Ip Servies

Main IP -
Sub IP -

I request you to please check. allow us to keep our Att. subscribers up-to date.

Looking forward to your positive response.


Best Regrds,




22.4K Messages


Hi Jeanne,


I will be happy to help. Please respond with as much of the following information as possible. Once you complete these details and return to me, I can have my Tech Team review and help get these IPs unblocked. Talk to you soon,


Full Name:
Contact #:

Company name:
Published Mail Practices:
Terms & Conditions:
Anti-Spam Policy:
End User Service Agreement:
Published Content & Commerce Statement:
Subscribe Link:
Unsubscribe Link:


Thank you,

Laura G.
AT&T Social Media Manager



22.4K Messages


Hello Jeanne-

We didn't hear back from you and wanted to check in. Please respond with the requested information so we can escalate your issue.


Thank you,

Laura G.
AT&T Business Social Media

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