Topic Last Modified: 2009-08-05

Use the General tab to view the properties of the Exchange ActiveSync virtual directory and to specify an external URL.


This label shows the name of the server.

Web site

This label shows the name of the Web site.

SSL Enabled

This label shows whether Secure Sockets Layer (SSL) is configured on the Web site.


This label shows the last date and time that the server was modified.

External URL

Use this text box to enter the external URL for the server. The external URL is required if the server that is running the Client Access server role is exposed to the Internet. This value is typically set to http://domainname/microsoft-server-activesync.

  1. Use the Authentication tab to control the authentication methods for the Exchange ActiveSync virtual directory.

Basic authentication (password is sent in clear text)

Select this check box if you want the mobile device to send the user name and password in clear text.

Because passwords are sent in clear text with Basic authentication, you should configure SSL to encrypt data transferred between your mobile clients and the Exchange ActiveSync virtual directory.
Client Certificate authentication

Select whether you want to ignore, accept, or require client certificate authentication.

Note   Requiring client certificates will force you to configure SSL on the Web site that is hosting the Exchange ActiveSync virtual directory.

Use the Remote File Servers tab to specify allowed and blocked host names for your Exchange ActiveSync clients. This tab also allows you to configure which domains are treated as internal.

Block List

Click the Block button to configure a list of host names of servers to which clients are denied access.

Allow List

Click the Allow button to configure a list of host names of servers from which clients are allowed to access files.

Unknown Servers

Use this list to specify how to access files from host names that are not listed in either the Block list or the Allow list. The default value is Allow.

Enter the domain suffixes that should be treated as internal

Use this option to configure specific host names as internal host names. Click the Configure button to add host names to the Internal Domain Suffix List.

When clients try to access files on one of these host names, Exchange ActiveSync uses the internal network to access these files instead of trying to access them over the Internet.