The mailing list for listmasters using Sympa

[Steve Shipway <address@concealed>]

If a message has a DMARC header, but is relayed via your list which will change the message, you'll get an invalid DMARC signature and some sites will therefore reject it.

What we do is to strip any incoming DMARC and DKIM headers from messages going to lists using the remove headers option in Sympa.  Then, we add our own DKIM signatures on the way out.

Steve

Steve Shipway

University of Auckland ITS

UNIX Systems Design Lead

address@concealed

Ph: +64 9 373 7599 ext 86487

 

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