You can specify a set of message Header and Body lines to be used to detect spam. When the server receives mail in the RFC822 format (via SMTP, RPOP, POP XTND XMIT, PIPE modules), it compares each received header and body line with the specified lists. If a message contains one of the specified lines, the message is rejected.
You can use the wildcard ('*', asterisk) symbols in the Banned Lines you specify. Usually you should not use them, since you are expected to compose the "banned" lists by copying header or body lines from the known spam messages.
Message lines are compared to the specified Banned lines in the case-sensitive mode.
Each Header line can include the end of line symbols if the header field was "wrapped".
If a message header or body is encoded (using MIME or UU encoding), the lines are not decoded before they are compared to the Banned line sets.
To specify the set of Banned Lines, open the Queue pages in the Settings realm of the WebAdmin Interface, and click the RFCReader link.
To add a new line, enter it in the empty field, and click the Update button.
To remove a line, delete it from its field, and click the Update button.