🚀 go-pugleaf

According to karl@naitc.naitc.com (Karl Denninger):
>We are running Smail3, and need to have the functionality in
>"Return-Receipt-To:" that is present in sendmail and elsewhere.

You could do this with the "shadow transport" feature.

NOTE: I have NOT tested the procedure given below.  This is just a
hint as to what might work.  On the other hand, I have been spending
some time lately hacking on Smail 3's innards, so I might be right.

Define a transport that does nothing except send acknowledgements to
the address(es) listed in a Return-Receipt-To header.  I would
recommend the use of my Deliver program or a Perl script, but a shell
script might be good enough if your volume isn't too high.  Call the
new transport "local_receipt".

Then add "shadow = local_receipt" to your "local" transport
definition.

Presto, all locally-delivered messages with Return-Receipt-To headers
are automatically acknowledged.
-- 
Chip Salzenberg at ComDev/TCT     <chip@tct.uucp>, <uunet!ateng!tct!chip>