Very Computer

?postprocessors, such as gateways, to determine the actual recipient
?using the message itself when the message is from a mailing list.

?Is there a particular variant of sendmail that includes the "for"
?information, or something in sendmail.cf, or in one of the m4 macros?
?We need to be sure the explicit address is there.

Sendmail 8 adds it when there is exactly one receiver for mail
(if there is more than one receiver for that particular envelope,
 to what address sendmail should add here?)

Doug> When mail comes in from a mailing list to a user of that
Doug> list, some SMTP servers add a header line like

You can use "$?u for $u$." to get that in the header.  Here's
what I use on mine:

HReceived: $?sfrom $s $.$?_($?s$|from $.$_)$.
 by $j ($v/$Z$?L/$L$.)$?r with $r$. id $i$?u
 for $u$.;$?u $|
 $.$b

$L is our local version number, so you might want to leave that
out.  If you don't have $L defined, then it won't hurt to leave
it in either.

Doug> for postprocessors, such as gateways, to determine the
Doug> actual recipient using the message itself when the message
Doug> is from a mailing list.

You shouldn't be trying to guess anything like that from the
Received: headers, really.  You should pass the envelope
recipient ($u) to your gateway script on the command line when
invoking it.  Here's an example of my pop gateway:

Mpop,      P=/usr/local/mh/lib/spop, F=lsDFMPenu, S=10, R=20/40,
           A=pop $u

And here's another example where I also pass the host ($h) and
the sender ($f) as parameters:

Mprocmail, P=/usr/local/bin/procmail, F=DFMShu, S=10, R=20/40,
           A=procmail -m /etc/procmailrcs/$h $f $u

Both mailers (pop and procmail) are included in the 8.7.3
release of sendmail.
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( Kimmo Suominen                         "That's what I think" )

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postprocessors, such as gateways, to determine the actual recipient
using the message itself when the message is from a mailing list.

Is there a particular variant of sendmail that includes the "for"
information, or something in sendmail.cf, or in one of the m4 macros?
We need to be sure the explicit address is there.

Thanks,

Doug