We are unable to access OWA from outside, but can from inside. Firewall apears fine! I know I haven't given you much, but....Windows Server 2008 R2. Exchange 2010 64-bit. Can receive emails on PC's and laptops in house. Just can't access OWA from outside and we have employees that are on the road.Any suggestions!!! Help!

What do external users see? Does the firewall logs show the connections?Anything in the IIS logs or event logs?DNS corectly set for external access?Certificate valid?

mshallow, 1. Make sure FQDN you are using i.e. owa.yourdomain.com resolves to the correct Public IP address of the server hosting IIS OWA 2. Firewall port 443 and/or 80 is open and forwarded to machine hosting IIS OWA 3. Check host header and SSL on IIS MiguelMiguel Fra / Falcon ITS Computer & Network Support, Miami, FL Visit our Knowledgebase Sharepoint Site

Sorry, I meant bindings. In IIS7 the host headers are now 'bindings', check that you have a binding for your owa FQDN. MiguelMiguel Fra / Falcon ITS Computer & Network Support, Miami, FL Visit our Knowledgebase Sharepoint Site

Thanks everyone for suggestions. We ended up calling Microsoft and they told us that it definitely wasn't the server.Called Cisco and they were able to configure the firewall to let the OWA come in. We configured wrong.Sorry I din't reply sooner. Have been swamped trying to setup Exchange.