I solved this after few hours reading and playing with run file located in /var/qmailsupervise/qmail-smtpd. Most howto found on Net doesnt really tell how to properly setting up rhost-check and rblsmtpd with tcpserver such as
. Most howto does not tell how to execute those mission properly.
So here the step.
1. I use
qmailrocks to set up Qmail systems (not using Qtrap other than SpamAssassin which only TAG spam mail as
:SPAM: joined together with ClamAV and Qmail-Scanner). Assuming you too have already running Qmail server, therefore I created scripts directory in /downloads.
# mkdir /downloads/scripts && cd /downloads/scripts
2. Get rhost-check.c from the site.
# wget http://www.zentus.com/rhost-check.c
3. Open rhost-check.c.
# vim rhost-check.c
4. Look for
putenv(“RBLSMTPD=bad reverse DNS”);
and change it to putenv(“RBLSMTPD=-bad reverse DNS”);
5. Save and exit. Compile according to the site here and copy the bin file into /usr/local/bin. 6. This that most howto doesnt deal with.
# vim /etc/tcp.smtp
and it will show : 127.:allow,RELAYCLIENT=""
put it RELAYCLIENT="/usr/local/bin/rhost-check" or maybe if you are using qqrbl, you can put qqrbl path into the RELAYCLIENT like example above. Save and exit.
7. Open /var/qmail/supervise/qmail-smtpd/run. Look for nearly at the end of the line that show 0 smtp. You will start do some changes below.
8. You will see this:
/usr/local/bin/tcpserver -v -R -l "$LOCAL" -x /etc/tcp.smtp.cdb -c "$MAXSMTPD" \
-u "$QMAILDUID" -g "$NOFILESGID" 0 smtp \
put -p in front "$LOCAL" and before -x. p is for paranoid.
Under 0 smtp \ put: /usr/local/bin/rblsmtpd -r sbl-xbl.spamhaus.org \
and the rest below we did not touch:
/var/qmail/bin/qmail-smtpd testbox.zarxcom.org \
/var/qmail/bin/vchkpw /usr/bin/true 2>&1
Save and exit.
9. Execute this command.
# qmailctl cdb /* reloading etc/tcp.smtp to take on new config*/
# qmailctl stop
# qmailctl start
Check the start process by doing a ps -ef | grep qmail.
10. Test the filter by using this line :
XJS*C4JDBQADN1.NSBN3*2IDNEN*GTUBE-STANDARD-ANTI-UBE-TEST-EMAIL*C.34X
use your yahoo.com or gmail.com or inbox.com or whatever, put those line shown above into the message
put the subject as FREE VIAGRA or something spammy like that and send to the email server that you had set up the rhost-check-rblsmtpd filter.
You should NOT get this email.(Test send before install rhost-check+rblsmtpd shows that test mail arrived with no attempt of rejecting other than tagging).
Note:test sending 'normal' mail first before sending spam-infected mail shown above in order to see the differences (between receiving and NOT receiving).
Try also do tail -f on /var/log/maillog and /var/log/qmail/qmail-smtpd/current.
