| 摘要 |
<p>A message processing system (1) processes messages (5) such as emails being delivered across a network. A plurality of processing modules (10) are each operable to perform an action. A policy engine (11) causes the operation of processing modules (10) selectively in accordance with rules in a rules data store (12) and facts in the fact data store (13). The rules specifying the performance of actions in dependence on facts. The actions performed by the modules (10) include actions of analysing a message (5) and generating message facts specifying information about messages (5), such as the presence of unacceptable content. Thus the rules may specify actions dependant on such message facts. The actions include actions of controlling the delivery of a message (5) or other remedial action.</p> |
