On 25.08.22 18:10, Alessandro Vesely wrote:
Thanks Ged for all the feedback.
The lack of interest by others proves that From: munging is not so
much of a nuisance as they say...
This will come sooner or later, however:
earlier this year I've done small dmarc research for our client:
- microsoft software (on-premise exchange and 365) does not DKIM-sign DSN
e-mail (delivery and non-delivery notifications) although those have
sending domain in From: (I guess domain is added after sig generated)
- only a few % of domains has other DMARC policy than none
- mailman 2 (used here) only munges From: when domain DMARC policy for the
sending domain is other than none.
On Tue, 23 Aug 2022, Alessandro Vesely wrote:
I see the list operates both From: munging and ARC sealing. While
I'm clear about the former, I'm curious about how ARC works:
Do any subscribers trust the seal by isc.org?
I guess most of recipients use predefined configurations, e.g. no
whitelisting.
out of curiousity, I set my opendmarc.conf:
DomainWhitelist lists.isc.org
so we'll see next time mail comes.
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