Re:How to run your own mail server (2017)
by jimmaswell on Wednesday November 20, 2019 @01:30PM
(#21586818)
If you took that as snotty then that's on you. Maybe people who can't take every simple question not being a delicately delivered paragraph full of qualifiers should be discouraged from using HN, yeah.
I chose it 20+ years ago because that's what qmail supported, back when subaddresing was a new idea. Over the ensuing years, most people ended up converging on + as the more common option, but that's only convention, not a standard. And what standard exists wasn't written until 2008: https://tools.https://tools.ietf.org/html/rfc5233ietf.org/ht...