hey everybody on the list,
i use postfix on my mailserver, ans spamassassin for marking spammails, it work's really great except
one aspect:
postfix uses the filter.sh which gives the mail to spamassassin. my only problem is, that every mail is beeing scanned, even if they are bigger (e.g. > 2mb). the most spam is smaller then 100k so the actuall setup isn't good for the ressources on the server.
*cut from master.cf'
filter unix - n n - - pipe
flags=Rq user=filter argv=/usr/local/filter/filter.sh -f ${sender} -- ${recipient}
*end*
the filter.sh looks like follows:
--------------------------------------------------------- cat /usr/local/filter/filter.sh
#!/bin/sh # # filter.sh # # Simple filter to plug Anomy Sanitizer and SpamAssassin # into the Postfix MTA # # From http://advosys.ca/papers/postfix-filtering.html # Advosys Consulting Inc., Ottawa # # For use with: # Postfix 20010228 or later # Anomy Sanitizer revision 1.49 or later # SpamAssassin 2.42 or later # # Note: Modify the file locations to match your particular # server and installation of SpamAssassin.
# File locations: # (CHANGE AS REQUIRED TO MATCH YOUR SERVER) INSPECT_DIR=/var/spool/filter SENDMAIL="/usr/sbin/sendmail -i" ANOMY=/usr/anomy SANITIZER=/usr/anomy/bin/sanitizer.pl ANOMY_CONF=/usr/anomy/anomy.conf ANOMY_LOG=/dev/null SPAMASSASSIN=/usr/bin/spamassassin
export ANOMY
# Exit codes from <sysexits.h> EX_TEMPFAIL=75 EX_UNAVAILABLE=69
cd $INSPECT_DIR || { echo $INSPECT_DIR does not exist; exit $EX_TEMPFAIL; }# Clean up when done or when aborting. trap "rm -f out.$$" 0 1 2 3 15
#cat | $SPAMASSASSIN -P | $SANITIZER \
# $ANOMY_CONF 2>>$ANOMY_LOG > out.$$ || \
# { echo Message content rejected; exit $EX_UNAVAILABLE; }cat | $SPAMASSASSIN > out.$$ || { echo Message content rejected; exit $EX_UNAVAILABLE; }
$SENDMAIL "$@" < out.$$
exit $? --------------------------------------------------------------------------------------------------------------------
my idea ist to modify the filter.sh that only mails smaller then 100k are given
to spamassassin, the rest shouldn't :/
i modified the script several times but finally don't get it working.
my skript: ---------------------------------------------------------------------------------------------------------------------- #!/bin/sh
INSPECT_DIR=/var/spool/filter SENDMAIL="/usr/sbin/sendmail -i" ANOMY=/usr/anomy SANITIZER=/usr/anomy/bin/sanitizer.pl ANOMY_CONF=/usr/anomy/anomy.conf ANOMY_LOG=/dev/null SPAMASSASSIN=/usr/bin/spamassassin
export ANOMY
# Exit codes from <sysexits.h>
EX_TEMPFAIL=75
EX_UNAVAILABLE=69
cd $INSPECT_DIR || { echo $INSPECT_DIR does not exist; exit $EX_TEMPFAIL; }
# Clean up when done or when aborting. SIZE="/usr/bin/du -hsk out.$$|awk '{$1}'" echo $SIZE trap "rm -f out.$$" 0 1 2 3 15
if [ "$SIZE" <= "100" ]
then
cat | $SPAMASSASSIN > out.$$ || { echo Message content rejected; exit $EX_UNAVAILABLE; }
$SENDMAIL "$@" < out.$$
exit $?
else
cat > out.$$ || { echo Message content rejected; exit $EX_UNAVAILABLE; }
$SENDMAIL "$@" < out.$$
exit $?
fi
------------------------------------------------------------------------------------------------------------------------------
any ideas on how to implement a sizecheck into the skript. i'm really stuck with it
so any kind of help is appreciated.
kind regards, werner detter
