Does anyone know if there have there been any attempts to use qmail-scanner
in conjunction with qmail-inject to modify headers in email messages being
sent by clients?

Firstly, I'm fairly new to qmail-scanner. I've only been using it for a
couple of weeks, and I'm already very impressed with it, and I'd now like to
try modifying it for something I've been trying to do with qmail for some
time.

The scenario:
As I'm sure many folks are aware, one of the "features" in Outlook 2003 is
that it no longer sends the Message-ID header. Unfortunately this can
sometimes cause problems with over-zealous mailservers that think anything
without a Message-ID header *must* be spam. This is causing grief for a
couple of my clients.

I'm currently running qmail-scanner in conjunction with the Plesk control
panel. A couple of idiosyncracies with Plesk from a standard qmail setup:
1) qmail-scanner is run from a modified qmail-queue executable, not via
Bruce Guenter's QMAILQUEUE patch. The original qmail-queue is called
qmail-queue.orig
2) Plesk uses xinetd + tcp_env rather than tcpserver

This means the normal method of fixing headers from wierd clients as
described in Dan Bernstein's FAQ using tcpserver
(http://cr.yp.to/qmail/faq/servers.html#network-rewriting) won't work.

What I'd like to be able to do is modify qmail-scanner slightly to pipe the
message to qmail-inject rather than qmail-queue if it's determined to be
from an authorized relayer (i.e. RELAYCLIENT is set).

Could this be done with just a simple check to see if RELAYCLIENT is enabled
just after the fork around line 1538?
open (QMQ, "|$qmailqueue")|| &error_condition ("Unable to open pipe to
$qmailqueue [$xstatus] (#4.3.0) - $!");

Or are the pipes and parameters required for qmail-queue and qmail-inject
vastly different?

Thanks in advance.

Regards,

Chris
-- 
C.M. Bagnall, Partner, Minotaur
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