3.3. Transport
Email streams carrying DMARC failure reports MUST conform to the
DMARC mechanism, thereby resulting in an aligned "pass". Special
care must be taken of authentication, as failure to authenticate
failure reports may result in mail loops.
Reporters SHOULD rate limit the number of failure reports sent to any
recipient to avoid overloading recipient systems.
Not MUST?
You might have other ways to prevent mailbombing, e.g., only sending
failure reports to people who you know have bigger mail systems than you
do.
Regards,
John Levine, [email protected], Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly
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