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Reverse DNS / PTR Request

Help with Reverse DNS or PTR request.

Questions

 • AT&T Internet Features

18.6K

8

0

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

 • AT&T Fiber Account

880

4

0

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

 • AT&T Internet Security

592

1

0

0

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