Body Checks
The optional header checks table allows email to be redirected based on the contents of the mesage body. Each entry in the table has a POSIX regular expression on the left-hand side, and an action on the right.

The regular expression can be something like :
/make.money.fast/
to match messages containing the text 'make money fast'.

The action can be like :
REJECT
to simply reject mail matching the expression, or :
REDIRECT spam@yourdomain.com
To forward mail to another address.