Add Message Attribute

The Add Message Attribute dialog box is displayed if you click Add on the Message Attributes page of the Policy Wizard.

To use the Message Details dialog box:

From the drop-down list, select a message attribute. The configurable options vary, depending on which attribute you select.
1. Header: Verify that the header exists, or if a header contains a specific word or phrase.
2. In the Name text box, enter the header to match, and then select one of the following:
- exists: Match messages containing this header.
- does not exist: Match messages that do not contain this header.
- is (exact match): Match instances of the named header with the exact text that you specify in the Value text box.
- contains (substring match): Match instances of the named header that contain the substring that you specify in the Value text box.
- matches regular expression: Match instances of the named header according to the regular expression that you specify in the Value text box.
- Source IP: Verify if a message was sent by a specified IP address. Note that the source IP is the first untrusted relay, according to the contents of the Trusted Relays list. In the IP address text box, enter a source IP or CIDR address. Then select is to trigger the rule whenever a match is found, or is not to trigger the rule whenever no match is found.
- Source Hostname: Verify whether a message was sent by a specified host or domain by performing a reverse DNS lookup of the first untrusted relay (FUR). In the Hostname or domain text box, enter a source IP. Then select is to trigger the rule whenever a match is found, or is not to trigger the rule whenever no match is found.
- Message Size: Verify that the size of the message is greater than or less than the specified threshold. Specify a message size in MB, KB, or Bytes.
- Attachment Size: Verify that the attachment size is greater than, less than, or equal to the specified threshold. Specify an attachment size in MB, KB, or Bytes.
Click Apply.