8.14. Enabling the Use of FBA/SSL with Outlook Mobile Access and Exchange ActiveSync
Problem
You need to allow access from mobile devices using Outlook Mobile Access (OMA) or Exchange ActiveSync (EAS) but you have SSL or form-based authentication enabled on your Exchange virtual server, which is not supported by EAS and OMA.
Solution
Using a graphical user interface
Open the IIS Manager snap-in from the Administrative Tools menu in the Start menu.
Expand the Web Sites and Default Web Site objects.
Right-click the Exchange virtual directory and choose All Tasks→ Save Configuration to a File. Provide a name for the file and click OK.
Right-click Default Web Site and choose New→ Virtual Directory (from file). Click Browse, select the file you saved in step 3, click Open, and click Read File.
Select Exchange as the configuration to import and click OK.
Since the Exchange virtual directory already exists on this server, you will be prompted to provide an alternative name for the new virtual directory. Enter a name and click OK.
Right-click the new virtual directory and choose Properties.
Click the Directory Security tab. Under Authentication and access control, click the Edit button. Ensure that both Integrated Windows authentication and Basic authentication are selected. Click OK.
Under IP address and domain name restrictions, click the Edit button. Select Denied access and add a single computer entry with the IP address of the local server. Click OK.
Under Secure communications, click the Edit ...