RE: [exim] Is there and logical reason to reject mail from: …

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Autor: Jan-Peter Koopmann
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A: Exim User's Mailing List, Tor Slettnes
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Assumpte: RE: [exim] Is there and logical reason to reject mail from: <> ?
On Saturday, October 16, 2004 11:42 PM exim-users-bounces@???
wrote:

>> For "real" users, it can be done with "envelope sender signatures" -
>> i.e. attach a hash or cryptographic letter sequence in the "MAIL
>>      FROM:" address of outgoing mail: MAIL
>> FROM:<woods=signature@???> 

>
> That's just as bogus and idea as SPF is. :-)


Not trying to get into SPF again (no use), but why exactly is using
"envelope sender signature" bogus?

Regards,
JP