My email server has been put on ATT blocklist, my users can't email anyone at ATT hosted address!
Can someone please help in resolving this issue :
553 5.3.0 flph823 DNSBL:RBL 521< xxx >_is_blocked.For assistance forward this email to email@example.com
I've emailed firstname.lastname@example.org twice in the past two days, but haven't heard back from them. Not being an ATT customer myself I can't simply call ATT tech support, and my users can't email anyone on an ATT hosted email address re: @Pacbell.net , @sbcglobal.net, etc.
I've tried scouring these posts for solutions but can't find any.
We understand that you have already emailed the black-list team twice. Thank you do doing that. They have received your request and they will be assisting you momentary. Thank you for patience in this matter.
Matthew, AT&T Community Specialist
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