Attachment blocking with spoofed addresses and DMARC
sca at andreasschulze.de
Fri Apr 15 17:29:05 CEST 2016
> why accept dmarc fail ?
Quanah did not mention the real domain so it's possible they publish a
Than no reject will happen in any case.
Maybe there is a setting "mydomains" including "domain.com" and an
other setting "warn_banned_file_sender"
(not checked what the real parameter names are ...)
As the external message claim to be internal that would trigger that
Do your customer use the same amavis instance for submission an inbound MX?
Then "warn_banned_file_sender" should be enabled only on a policy bank
dedicated to submission.
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