Difference between revisions of "Spamassassin"
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(Add Bayes training) |
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{{WIP}} | {{WIP}} | ||
| + | |||
| + | == Install == | ||
| + | |||
| + | <syntaxhighlight lang="console"> | ||
| + | # apt install spamassassin | ||
| + | </syntaxhighlight> | ||
| + | |||
edit file <code>/etc/spamassassin/local.cf</code> | edit file <code>/etc/spamassassin/local.cf</code> | ||
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# mkdir /var/lib/spamassassin/bayes_db | # mkdir /var/lib/spamassassin/bayes_db | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | |||
== Training == | == Training == | ||
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# sa-learn --spam --showdots --dir /var/maildir/<username>/Maildir/.Spam/cur/ | # sa-learn --spam --showdots --dir /var/maildir/<username>/Maildir/.Spam/cur/ | ||
# sa-learn --ham --showdots --dir /var/maildir/<username>/Maildir/cur/ | # sa-learn --ham --showdots --dir /var/maildir/<username>/Maildir/cur/ | ||
| + | </syntaxhighlight> | ||
| + | |||
| + | == Integrate with exim == | ||
| + | |||
| + | <syntaxhighlight lang="console"> | ||
| + | # apt install sa-exim | ||
| + | </syntaxhighlight> | ||
| + | |||
| + | == Integrate with dovecot == | ||
| + | |||
| + | <syntaxhighlight lang="console"> | ||
| + | # apt install dovecot-antispam | ||
| + | </syntaxhighlight> | ||
| + | |||
| + | In file <code>/etc/dovecot/conf.d/20-imap.conf</code>, modify the option ''mail_plugins'' and add ''antispam'' to the list | ||
| + | <syntaxhighlight lang="ini"> | ||
| + | protocol imap { | ||
| + | # Space separated list of plugins to load (default is global mail_plugins). | ||
| + | mail_plugins = $mail_plugins antispam | ||
| + | } | ||
</syntaxhighlight> | </syntaxhighlight> | ||
Revision as of 08:39, 4 March 2016
 Warning: | This page is a work in progress and is not completed. Important informations might be missing or wrong. |
Install
# apt install spamassassin
edit file /etc/spamassassin/local.cf
bayes_path /var/lib/spamassassin/bayes_db/bayes
bayes_file_mode 0770
# mkdir /var/lib/spamassassin/bayes_db
Training
To reach a good efficiency, SpamAssassin Bayesian filter need to be trained with both spam and ham messages. You can use your actual mailbox for that but note the following points:
- Be sure that the folders you use for training contain only spam or ham. If a folder contain a mix of them, SpamAssassin will learn wrong info and produce bad quality results
- To be effective you need between 1000 and 5000 messages each of both spam and ham.
- You need to have more ham than spam to train. Otherwise, SpamAssassin might become biased toward spam.
# sa-learn --spam --showdots --dir /var/maildir/<username>/Maildir/.Spam/cur/
# sa-learn --ham --showdots --dir /var/maildir/<username>/Maildir/cur/
Integrate with exim
# apt install sa-exim
Integrate with dovecot
# apt install dovecot-antispam
In file /etc/dovecot/conf.d/20-imap.conf, modify the option mail_plugins and add antispam to the list
protocol imap {
# Space separated list of plugins to load (default is global mail_plugins).
mail_plugins = $mail_plugins antispam
}
