RDNS request to ISP

localhost

• March 23, 2023 03:36

Hello, How do we ask ISP to enable RDNS to our domain? 123.45.67.89 to mydomain.tld or 123.45.67.89 to server.mydomain.tld Im using different domain for whm Let say, my whm domain is: abcd.cctld and my web+email domain is abcd.tld What's the correct configuration? I have error "Reverse DNS is not a valid Hostname"

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  quietFinn

  • March 23, 2023 12:54

  if both mydomain.tld and server.mydomain.tld resolve to 123.45.67.89 the RNDS can be either of those, your decision. But if emails are sent from that IP the RDNS should be the hostname (server.mydomain.tld)

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  localhost

  • March 23, 2023 13:11

  But if emails are sent from that IP the RDNS should be the hostname (server.mydomain.tld)

  
  is this the cause of "Reverse DNS is not a valid Hostname" ? right now my hostname is server.mydomain.cctld and RDNS from ISP mydomain.cctld

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  quietFinn

  • March 23, 2023 15:48

  is this the cause of "Reverse DNS is not a valid Hostname" ? right now my hostname is server.mydomain.cctld and RDNS from ISP mydomain.cctld

  
  Yes.

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  localhost

  • March 24, 2023 01:20

  You right, after changing rdns address the problem solved. Thank you

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