On 26 Mar 2019, at 14:47, Matus UHLAR - fantomas wrote:
On 26.03.19 13:22, Bill Cole wrote:
Which is not a bad thing, in this context.
The problem is that most mailing lists routinely break DKIM signatures
anyway.
usually when they prepend Subject with a text (e.g. list id).
Often they don't break DKIM.
Sometimes it is a mysterious Something Else. For an unknown reason, some
messages to this list get broken.
if the mailing list doesn't modify existing headers, DKIM signatures
are
valid but they don't align, so DMARC policy is violated.
No: without modification of From, the original DKIM signature does align
with From, which is good enough that DMARC can pass IF the signature is
valid.
--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Available For Hire: https://linkedin.com/in/billcole
