DKIM

DKIM: DomainKeys Identified Mail

About

DomainKeys Identified Mail (DKIM) is an anti-spam measure which works by attaching a public key to each email, the identity of which is verified by its presence in the sender's DNS records.

Related

• OpenDKIM

Links

• Wikipedia
• at DigitalOcean:
  • 2021-01-19 Setting up DKIM/SPF on my domain. (forum question)
  • 2014-02-28 How To Install and Configure DKIM with Postfix on Debian Wheezy
• at Google Workspace Admin Help:
  • Troubleshoot DKIM issues
  • These operations appear to require a "business" (presumably paid) account:
    • Turn on DKIM for your domain
    • Help prevent spoofing and spam with DKIM