I followed this advice from www.dmarc.org/faq.html#s_17 to set up a wild-card reporting record. So I created:
parked.delta.com IN TXT v=DMARC1;p=reject; rua= mailto:[email protected], mailto:[email protected]; ruf=mailto:[email protected]; adkim=s; aspf=s; pct=100; sp=reject *._report._dmarc.delta.com IN TXT v=DMARC1; The idea was that we’d create cnames for parked domains (e.g. detla.com cname parked.delta.com) and so set blocking policy and get reporting. However DNS works for many, but not all variants: It seems to work correctly for x.y._report._dmarc.delta.com IN TXT v=DMARC1; x.co._report._dmarc.delta.com IN TXT v=DMARC1; x.edu._report._dmarc.delta.com. IN TXT v=DMARC1; x.co.uk._report._dmarc.delta.com IN TXT v=DMARC1; but not .com x.com._report._dmarc.delta.com – does not resolve. Any help would be appreciated.
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