Should external DNS be pointed to the CAS/HUB server in an Exchange 2010 environment?
Or should it point to the Mailbox server. Currently I have a CAS/HUB server and a Mailbox DAG backend. Internally clients connect directly to the CAS server but I am afraid that external hosts connect to the Mailbox server also as I do not have the CAS server in DNS. I just noticed this. Why is it still working? How is it working. I don't get it.