PHP web application development company (Birmingham, UK)

tel: 0845 0046746

Stopping the deluge of email spam for qmail using SpamDyke

If you’re having spam trouble with qmail based Linux servers (in our customer’s case - Plesk based) then perhaps you need to look at using SpamDyke

Installation is pretty easy -

wget http://www.spamdyke.org/releases/spamdyke-4.3.0.tgz
tar -zxf spamdyke-4.3.0
cd spamdyke-4.3.0/spamdyke
./configure
make  && cp spamdyke /usr/local/bin

Then, assuming qmail is running through xinetd – edit /etc/xinetd.d/smtp_psa to look like :

service smtp
{
    socket_type = stream
    protocol = tcp
    wait = no
    disable = no
    user = root
    instances = UNLIMITED
    env = SMTPAUTH=1
    server = /var/qmail/bin/tcp-env
    server_args = -Rt0 /usr/local/bin/spamdyke -f /etc/spamdyke.conf /var/qmail/bin/relaylock /var/qmail/bin/qmail-smtpd /var/qmail/bin/smtp_auth /var/qmail/bin/true /var/qmail/bin/cmd5checkpw /var/qmail/bin/true
}

 

Finally, copy the example configuration file (spamdyke.conf.example to /etc/spamdyke.conf) and edit to enable some DNS Blacklists – e.g.


log-level=info
log-target=syslog
dns-blacklist-entry=zen.spamhaus.org
graylist-level=always-create-dir
graylist-dir=/var/spamdyke/graylist
graylist-max-secs=60000
graylist-min-secs=360

Once xinetd is restarted (service xinetd restart) you should see entries from SpamDyke appear in the system mail log file.

Hopefully the addition of greylisting and DNS blacklists will help stem the flow of spam in….

, , , , , ,