On Thu 26/Oct/2023 09:16:58 +0200 Olivier Hureau wrote:
I assume there is a semicolon such as 't=y; pct=0'

As unknown tags must be ignore in both RFC 7489 and dmarcbis : the unknown tag "t" must be ignored by an RFC 7489 parser. Same for a dmarcbis parser, as the pct tag does not exist anymore, the parser must ignore "pct".

If it is a backward-compatible parser, I would personally ignore the oldest tags : pct.


Correct. That consideration invalidates a sentence of the article, which was not taken from Appendix A.7:

    Introducing the “t” tag simplifies the DMARC policy by reducing the
    number of available tags and values.


Best
Ale
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