Hi guys, I have a MS Exchange problem and I hope someone can help me. I have to companies that must be separated physically and logically. I used a Cisco 3750 layer three switch to create 4 Vlan’s. Vlan1 for company A servers and vlan 2 for company A Workstations. Vlan 3 for company B servers and vlan 4 for company B Workstations. The subnets are: vlan 1 192.168.1.0, vlan 2 192.168.2.0, vlan 3 192.168.3.0, vlan 4 192.168.4.0. All servers for both companies are Win2k3 servers. Each company has its own 2k3 Ms Exchange box. I can send and receive mail form both companies to external addresses, but not to each other. I can ping both Exchange boxes from each other. When I try to telnet to either exchange box on port 25 it connects; however, when I try to send mail via telnet session I get the error message “unable to relay for user@abc.com”.
Each one teach one
Each one teach one