> For the situation you described I was guessing that both were in the same > routing group/Admin group. If they are in the routing group, then no > intervention is required for them to send messages to each other. That > should work and if it does not, you need to troubleshoot and fix that prior > to moving on. I am having that exact problem right now at a client. Exchange and Exchange1 belong to same routing group and same admin group, but users on one can not send to users on another. I am troubleshooting this and any pointers is appreciated. No errors at present in the event logs, messages just sit in queue until timed out, then NDR to sender. John Tolmachoff Engineer/Consultant/Owner eServices For You