Hi Rolf,

> -----Original Message-----
> From: Rolf E. Sonneveld [mailto:[email protected]]
> Sent: Thursday, September 02, 2010 11:24 AM
> To: Murray S. Kucherawy
> Cc: IETF DKIM WG
> Subject: Re: [ietf-dkim] draft-ietf-dkim-mailinglists-02 review
> 
> Someone sends a spam-type message from a large ESP to a mailbox he
> owns,
> somewhere on the Internet. The message is DKIM signed by the ESP. The
> spammer then takes the entire message including complete headers, and
> replays it using different envelope To: addresses and (optionally)
> different envelope From addresses. A verifier find the signature to be
> valid and at the end of the day this type of replay will impact the
> reputation of the ESP.

All true, but this isn't anything new.  I remember this came up ages ago, 
before even RFC4871 was published.

If the concern is reputation impact, there's a different venue where that 
should be discussed.  Reputation is specifically out of scope here.

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