Elizabeth, (speaking as a DNS person). I think this is "OK" - at my last job we set up DMARC records which stricter in certain subdomains than the parent domain. (Now I need to go find the machine where I left my code which did all this validation).
(As a DNS person I want to find the folks who put in the TXT record for _ dmarc.cuny.edu and ask them to quote their string. But that's my OCD). tim On Thu, Feb 23, 2023 at 5:30 PM Elizabeth Zwicky <zwicky= 40otoh....@dmarc.ietf.org> wrote: > > I haven’t done extensive research but here is a live example where > treewalk will cause a result change. > > From: is in the domain Ret.bmcc.cuny.edu which has no DMARC record. > > _dmarc.bmcc.cuny.edu. 300 IN TXT "v=DMARC1; p=quarantine; > fo=1; rua=mailto:dmarc_...@emaildefense.proofpoint.com; ruf=mailto: > dmarc_...@emaildefense.proofpoint.com" > > _dmarc.cuny.edu. 3325 IN TXT "v=DMARC1;" "p=none;" > "rua=mailto:dmarc_...@emaildefense.proofpoint.com,mailto: > post.mas...@cuny.edu;" "ruf=mailto:dmarc_...@emaildefense.proofpoint.com > ,mailto:post.mas...@cuny.edu;"; "fo=1" > > Elizabeth Zwicky > _______________________________________________ > dmarc mailing list > dmarc@ietf.org > https://www.ietf.org/mailman/listinfo/dmarc >
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