We are running exchange 2007 and 2013. Some applications such as Symantec Backup Exec and Piceswork can't send the notification to our internal users and external users. I tried to add the server IP addresses to the relay, but that doesn't fix the problem.
Bob Lin, MCSE & CNE Networking, Internet, Routing, VPN Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net How to Install and Configure Windows, VMware, Virtualization and Cisco on http://www.HowToNetworking.com