Every once in a while I see message postings on this list about using
the EXITCODE in procmail to reject (not accept) certain incoming e-mail,
and various replies to those postings explaining that by the time the
message is being looked at by procmail, it is too late to reject it...
the message has already been accepted.
I'm a little confused by this.... is this always true? my sendmail.mc
file has this line it:
FEATURE(local_procmail,`',procmail -t -Y -a $h -d $u')dnl
and ends with:
MAILER(smtp)dnl
MAILER(procmail)dnl
Can this be read as "receive/accept messages via SMTP, then pass them to
procmail for further examination"?
Or, is procmail being called as a function/subroutine, so when procmail
ends, the procmail exitcode is seen by sendmail? In which case, sendmail
still has the opportunity to reject (not accept) the message "at source"
because the tcp connection is still open.
Thank you.
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