How do I contact the AT&T postmaster and what domains are associated with their email filtering?

Email marketer from Email Geeks shares a list of domains that they used to think were all the same AT&T filter, including att.net, bellsouth.net, sbcglobal.net, prodigy.net, snet.net, ameritech.net, nvbell.net, pacbell.net, swbell.net, flash.net and worldnet.att.net.

Email marketer from Email Geeks shares that a quick check of bounces from att.net showed that all the remote IPs have rDNS of prodigy.net. The MTAs are in AT&T's network, but the mail is (or at least used to be) passed over to Yahoo (VM) for final delivery/filtering and interface.

Email marketer from Reddit shares that common AT&T associated domains include att.net, bellsouth.net, sbcglobal.net, and currently.com. Suggests treating them as distinct entities for deliverability troubleshooting.

Email marketer from SendGrid shares that IP reputation will influence the delivery of your emails. If you have a low IP reputation it can impact negatively on deliverability. You should ensure that your IP is not on any blocklists.

Email marketer from Validity shares that feedback loops will provide insight into the spam complaints from users. If users are marking the email as spam you can then take action to remove these users from your mailing list.

Email marketer from Email Geeks shares that at some point ATT and all the baby bell domains were removed from Yahoo before the AOL/Yahoo merge and that you can contact AT&T at abuse_rbl@abuse-att.net. This email is still listed at att.com.

Email marketer from Stack Overflow discusses the complexity of AT&T's email infrastructure, noting its historical ties to various providers (Yahoo, Verizon) and the potential for inconsistent filtering. Suggests monitoring bounces and feedback loops to identify specific issues.

Email marketer from Mailjet explains that senders encountering deliverability issues with AT&T should ensure proper email authentication, including SPF, DKIM, and DMARC records. They advise checking sender reputation and adhering to email best practices.

Email marketer from EmailOnAcid explains that to improve deliverability to AT&T domains, monitor your sender reputation, authenticate your emails with SPF, DKIM, and DMARC, and ensure your content is not spammy.

Email marketer from Email Geeks explains that when they see blocks at Verizon (Yahoo/AOL/Verizon), they are not seeing them on att domains, indicating different filtering.

Expert from Word to the Wise explains that maintaining a positive sending reputation requires actively monitoring blocklist listings and feedback loops to identify and address deliverability problems with AT&T, and adjusting sending practices accordingly.

Expert from Spam Resource explains that AT&T email blocking policies and contact information for their postmaster are difficult to obtain directly, and advises monitoring bounce messages for specific guidance, and using standard deliverability best practices.

Expert from Email Geeks explains that AT&T is powered by Prodigy which is powered by Yahoo which is now powered by Verizon and AT&T’s probably happy to let it be Verizon’s problem.

Documentation from SparkPost explains that you need to actively monitor bounces to identify the reason that your email was rejected from the server. You can then improve to make sure your mail is accepted in the future.

Documentation from DMARC answers question about DMARC needing to be set up to allow you to use reporting to see if your emails are being delivered and any potential issues

Documentation from AT&T Official Website shares instructions for how to report unwanted emails or spam received by their customers.

Documentation from RFC-Editor explains that SPF records need to be correctly set up to authenticate your email.

Documentation from AT&T Postmaster Support provides the email address abuse_rbl@abuse-att.net as the appropriate contact for reporting abuse and requesting delisting.