![]() Then, you must add a pointer (PTR) record in it. ![]() You must configure Route 53 to respond to reverse DNS lookup queries for your server by creating a public hosted zone. In this case, complete the Resolution steps in the "Using on-premises SMTP servers" section. The IP address owner might require you to create a reverse DNS record and provide only the name servers to them for delegation. In this case, you must use the method provided by the IP address owner to configure reverse DNS. The third party might be another cloud computing platform or your internet service provider (ISP). If you have an on-premises SMTP server and you use non-AWS resources, your IP addresses might be owned by a third party.To configure reverse DNS resolution for a Simple Mail Transfer Protocol (SMTP) server, you must first determine the appropriate method for your use case:
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