Ian Eiloart:
> Unless the intermediary co-operates by re-signing, mailing lists can break
> DKIM signatures. Since mailing lists generally use their own rfc5321 return
> paths, SPF failures should not result. Of course, a broken DKIM signature
> is equivalent to none at all. You should not reject or discard mail on this
> basis, but you do lose the ability to assign signer domain based reputation
> to the message.
>
> Unless the intermediary co-operates with SRS, or similar, *forwarding* can
> result in SPF failure. Since forwarders generally don't change the message
> content, DKIM signatures should remain intact.
Please do not confuse mailing lists with email forwarding. The two
are different things. It is not helpful to take an argument from
one context and use that to "prove" a point in the other context.
Wietse
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