'piped' aliases & DSNs - ReadList.com

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?

'piped' aliases & DSNs
\ Jeff McCombs (23 Jul 2007)
. \ Victor Duchovni (23 Jul 2007)

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
8 msg	/usr/lib/sendmail delivery status/message id's ...
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:	'piped' aliases & DSNs
Group:	Postfix-users
From:	Jeff McCombs
Date:	23 Jul 2007

Gang,

It's probably easier to give some background first, then ask my
question.

We're sending messages through a postfix system with the
'sendmail -Nsuccess,failure -f<someuser>' command from some automated
scripts. DSNs are processed by another script by way of a pipe from
/etc/aliases, e.g:

<someuser>: "|/path/to/script"

What I'm looking for, is a way to keep the DSN on the queue if
the script fails for whatever reason. Is there a exit/return code that
the script can spit back that will keep the message on-queue and retry
the DSN delivery after a time period? Right now if the script isn't
executable, or has some sort of error, the DSN message is lost.

Thanks,
-Jeff

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Jeff McCombs Trondent Development Corp
Manager, Network Operations 1300 S. Grove, STE 204
jmccombs Barrington IL, 60010
Office: (847) 898-9183 http://www.trondent.com
Mobile: (224) 361-6946 Fax: (847) 277 0805
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If you try to fail and you succeed, what did you just do?