On Tue, Feb 11, 2025 at 9:13 AM Joel Sommers <jsomm...@colgate.edu> wrote: > What are some of the key use cases for having an A record (or AAAA for that > matter) in which part or all of the address is embedded in the name?
server = real DNS name random end user = DNS name which embeds the IP address The A record is meant to match the PTR record. The PTR record embeds the address typically as a signal that the address is not statically assigned to a particular use or user. This is useful for filtering systems such as email spam filters where email servers know they should only receive unauthenticated email from other email servers which have been statically assigned an IP address and thus given a real name. Regards, Bill errin -- William Herrin b...@herrin.us https://bill.herrin.us/
