[vlad000]

Если они работают через ActiveSync,то вот так:

These steps affect both Outlook Mobile Access connections and Exchange ActiveSync connections. After you follow these steps, both Outlook Mobile Access and Exchange ActiveSync connections use the new virtual directory that you create. 1. Start Internet Information Services (IIS) Manager.
2. Locate the Exchange virtual directory. The default location is as follows:
Web Sites\Default Web Site\Exchange
3. Right-click the Exchange virtual directory, click All Tasks, and then click Save Configuration to a File.
4. In the File name box, type a name. For example, type ExchangeVDir. Click OK.
5. Right-click the root of this Web site. Typically, this is Default Web Site. Click New, and then click Virtual Directory (from file).
6. In the Import Configuration dialog box, click Browse, locate the file that you created in step 4, click Open, and then click Read File.
7. Under Select a configuration to import , click Exchange, and then click OK.

A dialog box will appear that states that the "virtual directory already exists."
8. In the Alias box, type a name for the new virtual directory that you want Exchange ActiveSync and Outlook Mobile Access to use. For example, type exchange-oma. Click OK.
9. Right-click the new virtual directory. In this example, click exchange-oma. Click Properties.
10. Click the Directory Security tab.
11. Under Authentication and access control, click Edit.
12. Make sure that only the following authentication methods are enabled, and then click OK: • Integrated Windows authentication
• Basic authentication

13. Under IP address and domain name restrictions, click Edit.
14. Click Denied access, click Add, click Single computer, type the IP address of the server that you are configuring, and then click OK.
15. Under Secure communications, click Edit. Make sure that Require secure channel (SSL) is not enabled, and then click OK.
16. Click OK, and then close the IIS Manager.
17. Click Start, click Run, type regedit, and then click OK.
18. Locate the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MasSync\Parameters
19. Right-click Parameters, click to New, and then click String Value.
20. Type ExchangeVDir, and then press ENTER. Right-click ExchangeVDir, and then click Modify.

NoteExchangeVDir is case-sensitive. If you do not type ExchangeVDir exactly as it appears in this article, ActiveSync does not find the key when it locates the exchange-oma folder.
21. In the Value data box, type the name of the new virtual directory that you created in step 8. For example, type /exchange-oma. Click OK.
22. Quit Registry Editor.
23. Restart the IIS Admin service. To do this, follow these steps: a. Click Start, click Run, type services.msc, and then click OK.
b. In the list of services, right-click IIS Admin service, and then click Restart.

Note If the server is Microsoft Windows Small Business Server 2003 (SBS), the name of the Exchange OMA virtual directory must be exchange-oma.

The integrated setup of Microsoft Windows Small Business Server 2003 creates the exchange-oma virtual directory in IIS. Additionally, it points the ExchangeVDir registry key to /exchange-oma during the initial installation. Other SBS wizards, such as the Configure E-mail and Internet Connection Wizard (CEICW) also expect the virtual directory name in IIS to be exchange-oma.