xkcd: Duty Calls
Archive| xkcd
Email authentication method designed to detect email spoofing| en.wikipedia.org
This RFC is the revised specification of the protocol and format used in the implementation of the Domain Name System. It obsoletes RFC-883. This memo documents the details of the domain name client - server communication.| IETF Datatracker
Nope, you don't know how to validate an email address. Even if you think you'd get the domain part right, fuggeddabout the local part. Seriously.| www.netmeister.org
Just how many weird Resource Records can you stuff into a zone file? And what do these weird RRs actually return?| www.netmeister.org
Everybody knows the small number of top-level domains in the DNS: .com, .org, .net, .gov, .vermögensberatung and .香港. Let's look at what else we find at the top!| www.netmeister.org
For historical reasons, inet_aton(3) accepts IPv4 addresses in several silly formats. Let's see what we can do with those...| www.netmeister.org
