Optimized routing for proxy use

摘要

A system is provided for applying optimized selection to route an email message over a network to a recipient mailbox. An email message may be enabled to be transmitted through a plurality of servers to a destination recipient mailbox server. An external message transfer agent may receive the email message using Simple Mail Transfer Protocol (SMTP) and may transmit the received email message to a proxy transport server. The proxy transport server may apply a selection for an optimal store-and-forward (SAF) transport server to which to route the email message. The selection may provide for identifying available SAF transport servers, organizing the SAF transport servers into server groups, and selecting the optimal SAF transport server belonging to a server group where a recipient mailbox server is located. The proxy transport server may transmit the email message to the SAF transport server for delivering the message to the recipient mailbox.

主权项

1. A method executed at least in part in a computing device for routing an email message to a recipient mailbox server over a network environment, the method comprising:
transmitting an email message received at an external mail transport agent (MTA) to a proxy transport server; identifying a store-and-forward (SAF) transport server associated with one or more recipient mailbox servers designated by the email message from one or more candidate SAF transport servers by applying one or more selection parameters for enabling the proxy transport server to select one of the candidate SAF transport servers for routing the email message to, wherein applying one or more selection parameters further comprises:
if any of the candidate SAF transport servers are located in a site where the proxy transport server is located, applying a local site selection parameter; andif any of the candidate SAF transport servers are located in a remote site where the proxy transport server is not located, applying a remote site selection parameter; transmitting the email message from the proxy transport server to the identified SAF transport server; transmitting the email message to one or more recipients associated with the identified SAF transport server directly from the identified SAF transport server; identifying another SAF transport server associated with one or more other recipient mailbox servers designated by the email message; and transmitting the email message from the identified SAF transport server to the other identified SAF transport server for delivery to the one or more other recipients.