DMARC vs DMARCbis
What DMARCbis changed, and whether it changes your record
RFC 9989 replaced RFC 7489 on 20 May 2026, and RFC 9091 with it. Nothing you published stopped working — but three tags stopped doing anything, three new ones appeared, and the way a record is found changed entirely.
Almost nobody has moved yet
We read 49 live DMARC records on 6 September 2026, Turkish and global. All 49 use only the old tag set. Not one uses np, psd or t. 26 still carry pct — and not a single one sets it below 100, which means removing pct changes nobody’s policy in practice. The migration is smaller than it sounds.
The tags
| Tag | DMARCRFC 7489 | DMARCbisRFC 9989 |
|---|---|---|
| p | works | works |
| sp | works | works |
| np | not there | works |
| t | not there | works |
| psd | not there | works |
| adkim | works | works |
| aspf | works | works |
| rua | works | works |
| ruf | works | works |
| fo | works | works |
| pct | works | not there |
| rf | works | not there |
| ri | works | not there |
How the record is found
Two lookups: the author domain, then the organisational domain worked out from the Public Suffix List — a file maintained outside DNS that every mail server has to ship and keep updated. Everything between the two is skipped.