https://www.duocircle.com/emails-services/5-best-dkim-record-examples-selectors-key-lengths-txt-formatting
5 Best DKIM Record Examples To Understand Selectors, Key Lengths, And TXT Formatting - DuoCircle
A well-formed DKIM record is the foundation of email authentication. It publishes a public key in DNS so receiving gateways can verify a DKIM signature (a
dkim recordkey lengthsbestexamplesunderstand