Patent ID: 7814540
Filing Date: 2010-10-12
Classification: H04L

Abstract:
1. A method for implementing a first set of email handling policies in an email system that implements a set of existing email handling policies in an existing email policy handling logic, said method comprising: obtaining, using gateway logic, source information related to an email, said email being sent by an email client, said source information including an Internet Protocol address (IP address) of said email client, said source information further including a port identifier of a port of said email client, said pen of said email client being-employed to send out said email said gateway logic being interposed between an external network and said existing email policy handling logic, encoding, using said gateway logic, said source information to produce encoded source information; relaying, using said gateway logic, said encoded source information from said gateway logic to a library; decoding, using said library, said encoded source information to obtain said source information; storing using said library, said source information as stored source information after said decoding; intercepting, using said library, Application Programming Interface calls (API calls) and system calls, said API calls and system calls involving said source information, said API calls and system calls being related to a calling function; and returning, using said library, said stored source information to said calling function.