From ArchWiki

SpamAssassin is a mail filter to identify spam.


Install the spamassassin package.

Create a spamassassin directory in /etc/mail and change the owner and group:

# mkdir /etc/mail/spamassassin/sa-update-keys
# chown spamd:spamd /etc/mail/spamassassin/sa-update-keys
# chmod 700 /etc/mail/spamassassin/sa-update-keys

Next start/enable spamassassin.service.


Go over /etc/mail/spamassassin/ and configure it to your needs.

Updating rules

Update the SpamAssassin matching patterns and compile them:

# sudo -u spamd sa-update && sudo -u spamd sa-compile

You will want to run this periodically, the best way to do so is by setting up a systemd timer.

Create the following service, which will run these commands:

Description=spamassassin housekeeping stuff


ExecStart=!/usr/bin/systemctl -q --no-block try-restart spamassassin.service

# uncomment the following ExecStart line to train SA's bayes filter
# and specify the path to the mailbox that contains spam email(s)
#ExecStart=/usr/bin/vendor_perl/sa-learn --spam <path_to_your_spam_mailbox>

Then create the timer, which will execute the previous service daily:

Description=spamassassin house keeping



Now you can start and enable spamassassin-update.timer.

Set maximum size for scanning

The default maximum size for scanning is 500 KB (see spamc(1p)). You can modify it: create the spamc configuration file. For example :

# spamc global configuration file

# max message size for scanning = 1Mo
-s 1000000



Install and setup clamd as described in ClamAV.

Follow one of the above instructions to call SpamAssassin from within your mail system.

Install the perl-cpanplus-dist-arch package. Then install the ClamAV perl library as follows:

# /usr/bin/vendor_perl/cpanp -i File::Scan::ClamAV

Add the 2 files from into /etc/mail/spamassassin/. Edit /etc/mail/spamassassin/ and update $CLAMD_SOCK to point to your Clamd socket location (default is /run/clamav/clamd.ctl).

Finally, restart spamassassin.service.


Note: The last version was released 2008.[1]

Vipul's Razor is a distributed, collaborative, spam detection and filtering network.

Make sure you have installed SpamAssassin first, then:

Install the razor package.

Register with Razor.

# mkdir /etc/mail/spamassassin/razor
# chown spamd:spamd /etc/mail/spamassassin/razor
# sudo -u spamd -s
$ cd /etc/mail/spamassassin/razor
$ razor-admin -home=/etc/mail/spamassassin/razor -register
$ razor-admin -home=/etc/mail/spamassassin/razor -create
$ razor-admin -home=/etc/mail/spamassassin/razor -discover

To tell SpamAssassin about Razor, add the following line to /etc/mail/spamassassin/

razor_config /etc/mail/spamassassin/razor/razor-agent.conf

To tell Razor about itself, add the following line to /etc/mail/spamassassin/razor/razor-agent.conf:

razorhome = /etc/mail/spamassassin/razor/

Finally, restart spamassassin.service.