/usr/lib/sendmail delivery status/message id's (postdrop)

5 msg	postconf not displaying all options
3 msg	empty_address_recipient not mapped by virtual o...
5 msg	stop smtp from anyone unless sasl auth?
2 msg	'piped' aliases & DSNs
12 msg	Strange From: in headers
5 msg	Mail - Access Denied
4 msg	qpsmtpd support service for postfix
39 msg	pix workaround broken?
2 msg	X-Original-To after bcc contains wrong address

/usr/lib/sendmail delivery status/message id's ...
\ Jacqui caren (23 Jul 2007)
. \ mouss (23 Jul 2007)
. \ (Wietse Venema) (23 Jul 2007)
. . \ (Wietse Venema) (23 Jul 2007)
. . . \ Jacqui caren (24 Jul 2007)
. . \ (clemens fischer) (23 Jul 2007)
. . . \ Victor Duchovni (23 Jul 2007)
. . . . \ (Wietse Venema) (23 Jul 2007)

23 msg	Recommended Filesystems?
8 msg	Mail going to backup server instead main server
3 msg	outgoing rate control
5 msg	mail forwarding loop: how do I prevent this?
5 msg	Server relaying existing virtual mailbox
1 msg	how can I rewrite the Mail From
3 msg	Constant connections from user unknown sending ...
2 msg	sporadic deferrals
8 msg	transport_maps: different behavior if discard o...
4 msg	Address verification questions

Subject:	/usr/lib/sendmail delivery status/message id's (postdrop)
Group:	Postfix-users
From:	Jacqui caren
Date:	23 Jul 2007

I have been processing and forwarding email using a perl
script and SMTP however this eats resources.

What I would like to do is once I have processed the message
I would like to use /usr/lib/sendmail -g -I or similar
to deliver into the maildrop queue.

However SMTP gives me a message ID that I use for an audit
trail. The /usr/lib/sendmail delivery mechanism
does not seem to have that option.

FWUI /usr/lib/sendmail is a front end for an undocumented
internal protocol (postdrop?). Could I write a perl module that
would deliver the message using this protocol (and give me
a message id etc) or is this protocol "subject to change
without notice"?

Comments?

TIA