5.7 Filtering Messages and Attachments

MailMarshal provides a framework that allows you to create an email policy in support of your Acceptable Use Policy.

A MailMarshal email policy is divided into Connection Policy, Content Analysis Policy, and Dead Letter Policy. Each of these sections contains one or more policy groups. Each policy group consists of one or more rules.

For more information about the options available when creating policy groups and rules, see “Understanding Policy Groups” and “Understanding Rules”.

The default email policy provided with MailMarshal contains several policy groups containing example and best practice rules:

Connection Policies

Contains rules that block unwanted emails before they are downloaded to your network.

Anti-Malware (Inbound)

Contains rules that implement a recommended best practice for virus scanning of email messages sent to your environment from the Internet.

Anti-Malware (Outbound)

Contains rules that implement a recommended best practice for virus scanning of email messages sent from your environment out to the Internet.

Anti-Spam

Contains rules that implement a recommended best practice for detection and blocking of spam sent to your environment from the Internet.

Blended Threats

Contains rules that implement detection of suspect URLs in messages and attachments. Checking can be performed at the time of message processing. With the optional Blended Threat Service, checking can be performed at the time a link is clicked by the email recipient.

Attachment Management (Inbound)

Contains rules that implement a recommended best practice for filtering attachments sent into your environment from the Internet.

Attachment Management (Outbound)

Contains rules that implement a recommended best practice for filtering attachments sent from your environment.

Policy Management (Inbound)

Contains rules to enforce your company policy in regard to receiving email containing prohibited lan­guage, credit card details, and so on. These rules also help you enforce SEC and SOC compliance.

Policy Management (Outbound)

Contains rules to enforce your company policy in regard to sending email containing prohibited lan­guage, credit card details, and so on. These rules also help you enforce SEC and SOC compliance.

Automated Responses

Contains rules that cause MailMarshal to send automated responses to various types of incoming email.

Message Archiving

Contains rules that specify how MailMarshal archives all inbound and outbound email.