When the Rule Type selected is Add Header the following describes the options available.

Rule Name

This is a text box to enter the name of the rule.

Header Field to be Added

This is a text box to enter the name of the header field to be added.

Value of Header Field to be Added

Enter the value of the header field to be added. You can enter a maximum of 255 characters in this field.

Perform If Flag Set

Only execute this rule if the specified flag is set.

The flag is set by a different rule. For further information on flags please refer to the Content Matching section.

Perform If Flag is NOT Set

Only try to execute this rule if the specified flag is not set.