Importance

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Abstract

An e-mail firewall applies policies to messages between a first site and a plurality of second sites in accordance with administrator selectable policies. The firewall includes an SMTP relay and policy managers to enforce administrator selectable policies, such as encryption and decryption policies, a source/destination policy, a content policy and a first virus policy. Some policies are characterized by administrator selectable criteria, administrator selectable exceptions to the criteria and administrator selectable actions associated with the criteria and exceptions. Policy managers can include an access manager for restricting transmission of messages between the first and second sites in accordance with the source/destination policy, a content manager for restricting transmission of messages between the first and second sites in accordance with the content policy, and a virus manager for restricting transmission of messages between the first and second sites in accordance with the virus policy.

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First Claim