On 7/19/23 10:45, Stephen J. Turnbull wrote:
% host -t TXT _dmarc.gmx.net _dmarc.gmx.net descriptive text "v=DMARC1; p=none; sp=quarantine; rua=mailto:dmarcreport@gmx.net" % host -t TXT _dmarc.web.de _dmarc.web.de descriptive text "v=DMARC1; p=none; sp=quarantine; rua=mailto:dmarcreport@web.de"
The important part is "p=none", which says that GMX does not reject or quarantine *solely* because of a DMARC fail.[1]
Not exactly. These DMARC records specify policies suggested to be applied by any recipient server to mail From: addresses in these domains. They don't say anything about mail To: addresses in these domains From: addresses in other domains.
Footnotes: [1] IIRC, the "sp=quarantine" means that some fraction of DMARC failing mail should be quarantined for testing purposes, but the default fraction is 0 so that is ignored.
Actually "sp" is subdomain policy and specifies the policy to be applied to mail From: sub-domains of the main domain.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan