Investigating invalid security certificate name errors in Outlook
Creating a security certificate for Exchange Server 2007 can be tricky, especially when it comesto choosing a domain name to include. At the very least, you have to include the OWA URL(www.domain.com) and the Autodiscover URL (autodiscover.domain.com). But if you’rerunning a clientaccess server on top of that, you’ll need use references for those URLs as well as thecas-server-name.AD.local format.
An Exchange hub transport server failure can bring internal and external mail flow to a screeching halt. Follow these steps to diagnose problems and resolve hub transport server issues as quickly as possible.
1. Verify connectivity
Before you even begin to troubleshoot Exchange, take a moment to verify basic TCP/IP connectivity. A failed network interface card (NIC) or a faulty patch cable can mimic a more serious problem. I’ve seen plenty of administrators waste time troubleshooting Exchange Server when the source of the outage was a failed network card. Always verify the hub transport server’s basic health before troubleshooting.