Hello, we installed a new internet line at our company, unfortunately the public IP is being blocked by AT&T domains. We have already tried several times emailing email@example.com to unblock our IP, but got no reply. Our on-premise Exchange Server is secured, fully patched, and NOT sending any spam whatsoever. Reverse-DNS is also properly set up.
We understand that you are unable to reach sbcglobal and att email domains. You have already taken the proper steps in order to get this corrected.
We do ask that you please be patient while we investigate and implement the resolution to get your ip address unblocked to you can email your customers. We will get to each and every customer in turn and we will get you unblocked.
Thank you for letting us know.
Matthew, AT&T Community Specialist
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Re: blocked IP - can't email sbcglobal.net, att.net
Hi Matthew, thank you for the response, which is the only one I have received so far so I do appreciate it. Assuming the investigation checks out OK, can you advise how long it normally takes to unblock the IP?