spf-discuss
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[spf-discuss] Re: Status and support for SRS

2007-01-25 08:28:29
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Seth Goodman wrote:
The case that can defeat this scheme is a forwarder munging a message
body but keeping the original return-path.  The same behavior would
also defeat DKIM for exactly the same reason, so I think most people
would accept this.

This is what I have been talking about.  Saying that DKIM breaks in the 
same cases doesn't make it any better.  DKIM -- just like SPF -- isn't the 
authority on what breakage people will accept.

This is not to say that message munging by forwarders is an acceptable 
practice.  But just like alias-style forwarding, it isn't going to go away 
anytime soon and we thus need to deal with it (i.e. try to get it phased 
out).

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