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Reverse DNS / PTR Request
Help with Reverse DNS or PTR request.
Questions
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AT&T Internet Features
IPv6: Reverse DNS
I posted this also in the ATT Internet features forum, but since I'm an ATT Fiber Residential customer, I'll post here to see if someone more knowledgeable can help: prov-dns@att.com says that ATT doesn't set IPv6 PTR's up. dnsrequests@att.com bounces. Is there anyone I can lobby to request that th
Questions
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AT&T Fiber Account
Email NDR because of supposed invalid PTR (rDNS) record.
Hello, I am a sysadmin trying to find out why our emails are being rejected by AT&T. The email is being sent from $user@$domain.com on a hosted Microsoft Exchange server mail.$domain.com to the recipient $email@bellsouth.net and we are getting a 550 5.7.1 NDR. Sanitized version o
Questions
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AT&T Internet Security
