spf-discuss
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Re: Email Forwarder's Protocol ( EFP )

2005-02-22 03:35:29
On Tue, Feb 22, 2005 at 03:07:36AM -0700, David MacQuigg wrote:

Unless the IP gets an SPF PASS, the only way to do that is to issue an SMTP
REJECT.

If the IP address is recorded in a header, then a bounce could be sent even 
*after* the SMTP session is closed.  Seems to me that an ability to relay a 
delayed bounce may be an unavoidable requirement if forwarders are going to 
participate in an IP-authenticated transfer.

Why should a sending host also be a receiving host ?

alex