Frequently Asked Questions

What is a DMARC record?

DMARC is a DNS TXT record at _dmarc.example.com that tells receivers how to handle mail that fails SPF or DKIM, and where to send reports.

What do the DMARC tags mean?

p sets the policy (none, quarantine, reject), sp sets subdomain policy, adkim and aspf set alignment (r or s), rua and ruf define report destinations, pct sets sampling, fo sets failure reporting options.

Why is multiple DMARC records a problem?

Receivers expect exactly one DMARC TXT record. Multiple records can cause parsing errors or policy to be ignored; combine tags into a single record.