On Fri, 6 Dec 2024, Daniel K. wrote:
Is the whole size discussion so hypothetical that we should even remove
the "MAY send a message saying you have a report that couldn't be sent"
part?

I guess your 'it's obsolete and reporters aren't expected to pay
attention to it' below is an answer.

All else being equal I prefer not to change stuff if we don't have to. This doesn't seem useful but it's also harmless.

We could go the obs-dmarc-uri route, imitating how RFC 5322 does it.

obs-dmarc-uri = dmarc-uri [ "!" 1*DIGIT [ "k" / "m" / "g" / "t" ] ]
             ; Obsolete syntax, reporters should ignore the
             ; size if it is found in a DMARC Policy Record.

and then update dmarc-urilist with the alternative

dmarc-urilist = ( dmarc-uri *(*WSP "," *WSP dmarc-uri) )
             / ( obs-dmarc-uri *(*WSP "," *WSP obs-dmarc-uri) )

Seems OK to me.

Regards,
John Levine, jo...@taugh.com, Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly

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