Reverse DNS (rDNS) is a process that resolves IP addresses to domain names, essentially the reverse of standard DNS resolution. It associates an IP address with a domain name, providing valuable information about the origin or ownership of a particular IP address. Reverse DNS is commonly used for security purposes, spam filtering, and network troubleshooting. For example, it can help identify the sender of an email based on the originating IP address. Additionally, it is essential for maintaining the integrity of email servers and preventing spam or phishing attacks. Becoming familiar with rDNS is crucial for network administrators and security professionals to ensure the security and reliability of their networks. Learn more interesting information about rDNS!