Here is the situation. We are an ISP and recently provided Internet service to a customer. The customer has got a mail server (mdaemon) and we are relaying his outgoing mails through our mail server. His DNS hosting on network solutions is pointed to our DNS server.. Internet is working fine. But recently when he is sending an email to a specific domain name , his email got rejected and came up with this error.
[IP address] does not have a reverse DNS entry. Connection Rejected.
Please contact your Dial-Up/DSL/Network ISP Provider. Default Reject!
For easy understanding , lets say his ip is 18.104.22.168.
In my DNS server running on windows 2003 , i have an entry for his domain in my forward lookup zone as
mail host (A) 22.214.171.124
Should I be creating an entry for him in my reverse lookup zone and if yes , what needs to be done ?