SpamAssassin ships with many spam detection rules in /usr/share/spamassassin/ directory. sudo systemctl status postfix spamass-milter Checking Email Header and Body with SpamAssassin sudo systemctl restart postfix spamass-milterĬheck the status and make sure they are running. Restart Postfix and Spamass Milter for the changes to take effect. Then add postfix user to the sa-milt group, so that Postfix will be able to communicate with spamass-milter. We also need to add the -g sa-milt option to make the spamass-milter socket writable by the sa-milt group. It’s a good practice to ignore emails originating from localhost by adding the -i 127.0.0.1 option. EXTRA_FLAGS="-m -r 8 -R SPAM_ARE_NOT_ALLOWED_HERE" If you want the sender to see a different reject text, then add the -R (reject text) option like below. milter-reject: END-OF-MESSAGE 5.7.1 Blocked by SpamAssassin If the score of a particular email is over 8, Spamassassin would reject it and you would find a message like below in the /var/log/maillog file, indicating it’s rejected. Uncomment this line and change 15 to your preferred reject score such as 8. Now open the /etc/sysconfig/spamass-milter file and find the following line. If you haven’t configured OpenDMARC, then you should remove local:opendmarc/opendmarc.sock, from smtpd_milters. If you have configured OpenDKIM and OpenDMARC on CentOS/RHEL, then these lines should look like below. Smtpd_milters = unix:/run/spamass-milter/spamass-milter.sock Next, edit /etc/postfix/main.cf file and add the following lines at the end of the file. sudo systemctl start spamass-milterĮnable auto-start at boot time.
#SPAMASSASSIN CLIENT INSTALL#
Install the spamass-filter packages on CentOS/RHEL from the EPEL software repository. I prefer to use SpamAssassin via the sendmail milter interface, because it allows me to reject an email when it gets a very high score such as 8, so it will never be seen by the recipient. There are several ways you can use to integrate SpamAssassin with Postfix. sudo systemctl start spamassassin Integrate SpamAssassin with Postfix SMTP Server as a Milter By default, the spamassassin systemd service is disabled, you can enable auto start at boot time with: sudo systemctl enable spamassassin Spamc is the client for SpamAssassin spam filtering daemon.
The server binary installed by the spamassassin package is called spamd, which will be listening on TCP port 783 on localhost. Run the following command to install SpamAssassin from the default CentOS/RHEL software repository.
If the score is high enough (by default 5.0), the message is considered spam. Each rule adds or removes points in the message’s score. It will check email message against a large set of rules. SpamAssassin is a free, open-source, flexible and powerful spam-fighting tool.
#SPAMASSASSIN CLIENT HOW TO#
In this tutorial, we are going to learn how to use SpamAssassin (SA) to detect spam on CentOS/RHEL mail server. I have a choice between Horde Groupware 5.2.14, Roundcube (I can’t find the version number) and SqirrelMail (I can’t find the version number), though I prefer to use Roundcube.Previously we discussed 7 effective methods for blocking email spam with Postfix on CentOS/RHEL. My domain host currently uses cPanel 64.0.22. all of the e-mail addresses I have created), so that spam is automatically moved to Roundcube’s “Junk” folder and will this occur prior to my e-mail hitting my IMAP clients (e.g. How do I configure SpamAssassin for my entire domain (i.e. When I login to cPanel with domain admin credentials, it says that SpamAssassin is enabled, however I clearly continue to get spam in my inbox (otherwise I wouldn’t even be posting this), even whilst my webmail is open in my browser (this occurred as I was typing this). One of the user accounts in particular gets a lot of spam and I would like minimise the impact of this by redirecting spam to the “Junk” folder in Roundcube (or the respective equivalent in Horde/SquirrelMail). one of the e-mail addresses I have created) will give me access to whatever cPanel features I’ve enabled/installed (e.g. My domain host – netregistry (Australia) – hosts my domain using cPanel… I can login as an with my domain admin credentials and access all of which cPanel offers, whilst logging with with user credentials (i.e.
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