what is a routing group
A routing group is a logical collection of servers used to control mail flow and public folder referrals. In a routing group, all servers communicate and transfer messages directly to one another. In a routing group, all servers communicate and transfer messages directly to one another, as follows:A user in your Exchange organization uses a mail client to send mail to another user.akes advantage of those configurations where all the servers in a routing group have the same network connectivity to the servers in other routing groups. Only a select few servers in a routing group. Makes troubleshooting message flow easier because there are limited points of contact between routing groups.