My setup is ISA SERVER 2006 >>> Exchange 2003. The isa server is also the dhcp server and the exchange server is also the internal, dns and active directory server. I have no front end server.
The issue is that after a network disconnect with my ISP, the exchange server publshing rule (OWA and HTTP/RPC) will not work. Internet works fine and I can even access other published sites from the isa server. however, http/rpc connections from window mobile phones, external outlook clients and OWA access will not work until I restart the ISA Firewall service.