all of these configurations as well as the appropriate communications hardware and software are known in the art software programming code embodying the present invention is typically stored in memory of some type such as the memory 228 and or storage 230 the routing station 210 may be configured as an exit routing station when it stores microprocessor executable instructions including first instructions for receiving a datagram comprising content data intended for multi recipient delivery in a destination domain second instructions for modifying the datagram for routing from the origin domain to the destination domain and third instructions for transmitting via the communications network the modified datagram to an entry routing station of the destination domain the entry routing station being capable of initiating multi recipient delivery in the destination domain optionally the exit routing station may store fourth instructions for retrieving information indicating parameters e g port numbers multicast addresses ttl values origin address destination address etc for delivery to the destination domain the routing station 210 may be configured as an entry routing station when it stores microprocessor executable instructions including first instructions for receiving a datagram configured for routing from the origin domain to the destination domain the datagram including.