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DMARCIAN: Understanding PTR DNS Resource Records
- February 15, 2024
- Posted by: Top Deliverability
- Category: DMARC DMARCIAN Email Authentication Email Services Industry News
DMARCIAN just published a brilliant story:
What is a PTR Record? A PTR (Pointer) record, also known as a Reverse DNS record, maps an IP address to a domain name; essentially, it’s the opposite of what an A record does in DNS. While A records are used to translate domain names to IP addresses, PTR records are used to verify that an IP address indeed corresponds to a domain name. This is a common verification step for receivers and part of many checks to determine the legitimacy of a connection’s origin, such as email servers. Why Does it Matter? PTR records hold significance for a myriad of reasons across various aspects of internet communication and network management. They facilitate smoother network operations, aid in troubleshooting, and enhance the trustworthiness of servers. However, for the purpose of this article, we will focus on their role in email security and delivery where their impact can be profound. Focusing
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