www.righteoushack.net/tag/rdns/

I frequently setup Exchange servers for businesses so I am quite familiar with the necessary steps required to do it properly. One thing on an mail administrators setup check list is DNS. Without the proper DNS entries, no one will find your mail serve ...

en.wikipedia.org/wiki/Reverse_DNS_lookup

In computer networking, reverse DNS lookup or reverse DNS resolution (rDNS) is the determination of a domain name that is associated with a given IP address using the Domain Name System (DNS) of the Internet.

Computer networks use the Domain Na ...