On Tue, 2020-06-02 at 10:37 +0200, Benoit Panizzon via mailop wrote: > DKIM is not a solution. I faced too many problems with mailinglists > and similar which did alter the header and broke DKIM signatures. > > Has anyone a hint what could be the cause for this problem? > > And yes, disabling IPv6 seems to solve the issue, but that is the wrong > way dealing with it :-)
This may be part of the issue. If you are using IPv6 then you really need to be signing with DKIM. Mailing lists etc. breaking your DKIM signature is pretty much expected behaviour and not a reason to disavow it entirely. Ken.
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