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zdenek.wagner at gmail.com
Tue Mar 5 15:31:02 CET 2019
út 5. 3. 2019 v 15:21 odesílatel Julian Bradfield
<jcb+xetex at jcbradfield.org> napsal:
> On 2019-03-05, Zdenek Wagner <zdenek.wagner at gmail.com> wrote:
> [ Please don't top-post. ]
> > And the last thing, setting of DMARC at tug.org is wrong, the DNS
> > query returns the SPF record, not the DMARC record.
> No, it isn't wrong - there is no setting for DMARC.
> A dns query for _dmarc.tug.org TXT records returns two records:
> _dmarc.tug.org. 8555 IN CNAME tug.org.
> tug.org. 8555 IN TXT "v=spf1 a a:freefriends.org mx:freefriends.org a:fencepost.gnu.org include:_spf.google.com ~all"
> tug.org has a wildcard CNAME *.tug.org -> tug.org (which strikes me as
> bad practice, but not wrong).
> DMARC does not specify whether CNAMEs should be followed, but even if
> they are, DMARC only looks at valid DMARC records.
Yes, there is CNAME but it refers to a SPF record, not to DMARC
record. DMARC should contain a different type of information with a
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