Method and system for e-mail filtering
First Claim
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1. A method for controlling transmission of messages in a data communication network, each message is associated with a message source, comprising:
- providing a store and forward relay, the relay associated with a plurality of recipients receiving messages;
the relay receiving a message intended for a recipient associated with the e-mail network;
the relay applying a first filtering policy to the message;
the relay delaying the delivery of the message in response to at least one predetermined result of applying said first filtering policy;
the relay applying a second filtering policy to the message after a delay period; and
the relay delivering the message in response to at least one predetermined result of applying said second filtering policy.
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Abstract
A relay provides message filtering services to an e-mail network. The relay monitors incoming communication and intercepts e-mail messages. The relay applies a policy to received messages to determine whether a message should be delayed. The relay applies a policy to delayed messages by reference to a delayed processing event which triggers the delayed processing. The relay updates policy data in accordance by employing an update module. The relay then restricts the delivery of messages having attributes close to those of harmful data as provided by a policy database.
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Citations
53 Claims
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1. A method for controlling transmission of messages in a data communication network, each message is associated with a message source, comprising:
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providing a store and forward relay, the relay associated with a plurality of recipients receiving messages;
the relay receiving a message intended for a recipient associated with the e-mail network;
the relay applying a first filtering policy to the message;
the relay delaying the delivery of the message in response to at least one predetermined result of applying said first filtering policy;
the relay applying a second filtering policy to the message after a delay period; and
the relay delivering the message in response to at least one predetermined result of applying said second filtering policy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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Specification