I have created an Implementer Notes page:
https://github.com/msimerson/mail-dmarc/wiki/DMARC-Implementer-Notes
It's a wiki, add anything I've missed.
Matt
DMARC Implementer Notes
A DMARC implementer might decide that a good data model to use is the XSD
schema included in the DMARC spec. If one validates against that specification,
they should be aware of the following data errors observed in the wild:
XSD schema deviations
Missing record section
From June 06 to ..., Microsoft has been sending out DMARC reports with missing
record sections.
Mis-labeled XML tags
Reports from junc.org have mis-labeled the 'identifiers' section as 'identities'
Invalid SPF result
Reports from ivenue.com arrive with /auth_results/spf/result=unknown. Unknown
is not a valid SPF result.
Gzip -vs- Zip compression
The 2012 and prior drafts specified zip compression. The 2013 draft specifies
gzip compression. More details are available in this mailing list thread.
Mail::DMARC receives reports in both formats and sends in gzip format.
Mail::DMARC may be the only implementation to send in gzip format. There are at
least two other implementations that read gzip compressed reports:
Date: June 4, 2013 6:12AM
Subject: DMARC support for ingesting gzip'd files
Thanks [email protected]!
We just rolled out importing of gzip'd DMARC XML, as you're the first
to send files this way. Everyone else has been sending via ZIP (not gzip)!
Well done!
The dmarcian.com crew
As of June 10th, I have yet to receive a gzip report.
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