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Defining your own spam filtering rules

You can define your own rules that match against regular expressions in the body and headers of emails. These are defined in /etc/netmanager/spam.rules.

The format for a body rule is:

SCORE body=TEXT TO MATCH

An example is:

10 body=c@ck

This will add 10 to the spam score (effectively rejecting it) if the body of the message contains c@ck (even if it is in the middle of word). To match a word break use \b, e.g. body=\bc@ck\b

The format for a header rule is:

SCORE header:HEADERNAME=TEXT TO MATCH

An example is:

10 header:X-PHP-Originating-Script=eval..'d code

This will add 10 to the spam score (effectively rejecting it) if it contained a header line like:

X-PHP-Originating-Script: 516:db24.php(1965) : eval()'d code

When the /etc/netmanager/spam.rules file has been saved, run the spamassassin build script.

If you add the -v flag to the build script (i.e. /usr/libexec/build/spamassassin -v), it will run a detailed rule check.

To check the rules yourself, run spamassassin --lint