OK, let's hop into your example. I care enough about DMARC to send reports about it, and I want to send all of my mail aligned. I send a test message that ends up unaligned somehow, perhaps through a broken relay I don't own, and I would ideally like to get one message back that tells me that. If I happen to send my test to a place that unintentionally sends an unaligned report back to me, perhaps because of the same relay, I'm going to get flooded, even though my local setup is verifiably correct. And, probably, so are they.
Report floods could be a problem, but they're a general problem that don't have a lot to do with failure loops. I used to get buckets of failure reports about random chinese spam that forged my domains on the From line.
It's reasonable to say that reporters should rate limit failure reports to avoid flooding recipients, but that's true no matter who sent the mail being reported.
Regards, John Levine, [email protected], Taughannock Networks, Trumansburg NY Please consider the environment before reading this e-mail. https://jl.ly _______________________________________________ dmarc mailing list [email protected] https://www.ietf.org/mailman/listinfo/dmarc
