Traffic handling load on network servers is moderated by attenuating POP checks at proxy servers located across the network. Attenuation of POP checks is accomplished by intercepting each POP check packet at a proxy server that is nominally local to where the user is located. The proxy server permits...http://www.google.es/patents/US6850968?utm_source=gb-gplus-sharePatente US6850968 - Reduction of network server loading