DMARC v — Version
Declares the record as DMARC. Must be the first tag, spelled exactly v=DMARC1.
- Required
- yes
- Default
- —
- Valid values
DMARC1
What it does
Receivers parse this before anything else. If v= is missing, misspelled, lowercase (v=dmarc1 is invalid), or not first in the record, the entire record is ignored and the domain is treated as having no DMARC policy at all — the same as publishing nothing.
Example
v=DMARC1; p=reject; rua=mailto:dmarc@example.com