RE: the after-queue, simple filter example
Just trying to figure out how it works.
I have a feeling I don't fully understand the full implications of
"after-queue".
>From master.cf:
# custom filter
filter unix - n n - 10 pipe
flags=Rq user=filter null_sender=
argv=/VOLUMES/gizmonics/work/afterqueue/simple -f ${sender} -- ${recipient}
The user is in
[root@clemi postfix]# grep -w filter /etc/passwd /etc/group
/etc/passwd:filter:x:506:506:smtp filter:/var/spool/filter/:/bin/bash
/etc/group:filter:x:506:
The user filter owns the directory
[root@clemi postfix]# ls -ld /var/spool/filter/
drwxr-xr-x 2 filter filter 4096 Jun 10 14:49 /var/spool/filter/
The user filter owns the script
[root@clemi postfix]# ls -l /VOLUMES/gizmonics/work/afterqueue/simple
-rwxr-xr-x 1 filter filter 814 Jun 10 14:46
/VOLUMES/gizmonics/work/afterqueue/simple
I've run that from the command line, ie:
/VOLUMES/gizmonics/work/afterqueue/simple -f gl -- [email protected] <
/VOLUMES/gizmonics/work/afterqueue/dull
and it works when run like that. The simple script does what I expect, and the
mail
does get to bbb's mail file.
Here's my simple script, which is just the example script from the
FILTER_README.html page with only two or so lines changed, marked below:
#!/bin/bash
# Simple shell-based filter. It is meant to be invoked as follows:
# /path/to/script -f sender recipients...
# Localize these. The -G option does nothing before Postfix 2.3.
INSPECT_DIR=/var/spool/filter
SENDMAIL="/usr/sbin/sendmail -G -i" # NEVER NEVER NEVER use "-t" here.
# Exit codes from <sysexits.h>
EX_TEMPFAIL=75
EX_UNAVAILABLE=69
# Clean up when done or when aborting.
trap "rm -f in.$$" 0 1 2 3 15
# Start processing.
cd $INSPECT_DIR || {
echo $INSPECT_DIR does not exist; exit $EX_TEMPFAIL; }
cat >in.$$ || {
echo Cannot save mail to file; exit $EX_TEMPFAIL; }
# Specify your content filter here.
# filter <in.$$ || {
# echo Message content rejected; exit $EX_UNAVAILABLE; }
### this sed line is added, and the $SENDMAIL changed to read from smak.$$
### otherwise, it's completely stock.
sed -e 's/http/hxxp/g' in.$$ > smak.$$
$SENDMAIL "$@" <smak.$$
exit $?
-------
I've changed master as shown above.
I've done postfix reload.
But all of my tests like so:
mail -s "wogujwrg" [email protected] < test.input.file
deliver the test.input.file unmodified. Do I not understand what
"after-queue" means? I've been assuming this would, sooner or later,
send things to the filter. It looks to me like it's bypassing
the filter.
j.
--
Jay Scott 512-835-3553 [email protected]
Head of Sun Support, Sr. System Administrator
Applied Research Labs, Computer Science Div. S224
University of Texas at Austin
