Hello,
is there already any recommendation from IETF to send DMARC
message-specific failure individual (non-aggregate) reports with
FROM:<> (or NOTIFY=NEVER)?
Consider this scenario: an email from a domain, with DMARC policy
“p=reject; ruf=postmaster@domain” fails validation. A
message-specific report is sent to postmaster@domain. The report is
bounced (or there is any reply on it) and the reply is again From:
that domain and does not validate DMARC. In turn a new
message-specific report is sent and this loop ends, when some disk
gets full. With FROM:<> or NOTIFY=NEVER there would be no such loop.
Note, that DMARC aggregate reports do not have this problem.
Regards
Дилян
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