To select scanning conditions for Other rule:
Next to Take rule action when, select one of the following, which specifies when InterScan™ Messaging Security Appliance (IMSA) can take action on an email message:
all conditions matched (AND)—When an email message matches all of the conditions.
any conditions matched (OR)—When an email message matches any of the conditions.
Select the check boxes next to the desired conditions:
Spam detection settings—Click the link to choose a level of spam protection and configure lists for approved and blocked senders and text exemptions.
Phishing emails
Name or extension—Click the link to configure filter settings for specific file names or extension names.
MIME content type—Click the link to configure filter settings for MIME content types.
True file type—Click the link to configure filter settings for common executable, document, image, media, and compressed files.
Size is {>, <, =} {size} {MB, KB, B}—Choose to filter attachments of a size that is more than, less than, or equal to a certain number of bytes, kilobytes, or megabytes. Type a number that represents the file size.
Number is {>, <, =} {number}—Choose to filter the number of attachments that is more than, less than, or equal to a certain number. Type a number that represents the total number of attachments for each email message.
Message size is {>, <, =} {size} {MB, KB, B}—Choose to filter email messages of a size that is more than, less than, or equal to a certain number of bytes, kilobytes, or megabytes. Type a number that represents the file size.
Subject keyword expressions—Click the link to manage your expression lists.
Subject is blank—Select to filter email messages without a subject. Sometimes spam messages do not contain subject lines.
Body keyword expressions—Click the link to manage your expression lists.
Header keyword expressions—Click the link to manage your expression lists. Headers include Subject, To, From, CC, and other headers that you can specify.
Attachment content keyword expressions—Click the link to manage your expression lists.
Recipient number {>, <, =} {number}—Choose to filter the number of recipients. Type a number that represents the total number of recipients for each email message.
Received time range—Click the link to choose a day and time within which a message was received.
If you are configuring a new filter, click Next. The screen for selecting actions appears.
If you are modifying an existing filter, click Save. The summary screen for that filter appears.
See also: