Date: Thu, 17 Aug 2000 12:21:33 -0700
   From: [EMAIL PROTECTED]

   Off tangent, how does an SMTP submission get at this feature? Interestingly,
   it should probably be something that each MTA knows about to be truly useful,
   consider secondary MXes gateway systems, etc. Ahh, a change in SMTP - fat chance!

Yes, doing this properly would require an SMTP extension.  I think it
could be fairly easily added to the DSN extension in RFC 1891.  (Of
course, qmail doesn't support DSN.)

Ian

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