DMARC
What Is DMARC? How It Works, Policies and Reports
DMARC is a DNS record that tells receivers what to do with mail that fails aligned SPF or DKIM, and where to send reports. How it works, with real records.
May 20, 20266 min read
DMARCDMARC Record Syntax: Every Tag, Default and Example
A DMARC record is one TXT record at _dmarc.yourdomain that starts v=DMARC1. Every tag with its RFC 7489 default, plus valid and broken examples.
May 12, 20267 min read
DMARCHow to Implement DMARC in 5 Steps: A Rollout Plan
List every sender, align SPF and DKIM for each, publish p=none with rua, read the reports, then ramp to quarantine and reject. Records for each step.
December 19, 20226 min read