A kind of method and system, for handling the Email for using an Email relay system, it is arranged to handle Email by a simple program than a proxy mode, use an email transfer protocol, by installing Email relay system between the server with server and network are associated without change, the associated server with Email relay system is arranged. One network interface (810) transmitting-receiving has the data for sending and receiving server. Receive server an email transfer protocol checking module (820) request connection, if email transfer protocol data received among data from send server convey and if one with subsequent request match respond request be received from receive server inspection email transfer protocol data content. One buffer (860) buffering includes the character string in email transfer protocol data. One character string detecting module (830) is if be received from email transfer protocol data in a DATA order DATA orders when buffering character string if stopping recording character string specific character string and being detected from character string.
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