6.1 Understanding Policy Types
MailMarshal email policy is divided into Connection Policy, Content Analysis Policy, and Dead Letter Policy. Each Policy Group and Rule belongs to one of these types of policy.
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Note: Connection Policy was previously known as Receiver Rules. Content Analysis Policy was previously known as Standard Rules. |
MailMarshal applies Connection Policy while the MailMarshal Receiver is receiving a message from a remote email server. Connection Policy can cause MailMarshal to refuse to accept a message based on the size or origin of the message. Because Connection Policy is based on the limited information available while the message is being received, only a few conditions are available in Connection Policy rules.
MailMarshal applies Content Analysis Policy after a message has been fully received. They are processed by the MailMarshal Engine. Content Analysis Policy can evaluate a large number of conditions, because the complete email message is available for evaluation. Content Analysis Policy can also take a large number of quarantine and logging actions.
MailMarshal applies Dead Letter Policy when a message cannot be unpacked, or cannot be processed, due to errors in message formatting. By default these messages are quarantined in special folders. You can specify a limited number of actions to deliver some of these messages to their original destination or an alternate address.