In article <CAGGEJxZq-y455dJ6USs5LNqbmT=lpssuf90dwnrzk2kutpx...@mail.gmail.com> 
you write:
>The mailing list question can be a bit tricky.

No kidding.  Here's a more complete set of workarounds we put on
the ASRG wiki.

http://wiki.asrg.sp.am/wiki/Mitigating_DMARC_damage_to_third_party_mail

I rewrite DMARC'ed addresses to local forwarding addresses and add a
DKIM signature in the forwarding domain, since of all the proposed
workarounds it seems to do the least damage to the users of the
mailing list.  For example. mail from [email protected] turns into
[email protected].

I do it in a little perl shim behind the Sympa list manager.

R's,
John

PS:

>Note: There will probably be at least one really angry reply to this
>post telling me how horrible this is and that I broke mailing lists.
>It'll be a rehash of an argument from more than a year ago. Truth be
>told, somebody else broke mailing lists; this is just how I personally
>decided to implement a fix that seems to work well for me. YMMV.

Uh huh.


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