A system and method for a remote or network-based application service offering virus scanning, sniffing, or detecting of e-mail viruses prior to the e-mail messages arriving at the destination system or server are disclosed. The method protects a computer system that is configured to receive an e-mail...http://www.google.com.au/patents/US6701440?utm_source=gb-gplus-sharePatent US6701440 - Method and system for protecting a computer using a remote e-mail scanning device
