You configure Microsoft Outlook 2010 security settings by using the Group Policy Object. When you do this, you notice that the programmatic security settings for Simple MAPI cannot be configured successfully.
To resolve this issue, configure the corresponding registry entries. To do this, follow these steps.
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
Set the value data of one or more of the following registry entries to 1 (PromptUser [default]), to 2 (AutoApprove), or to 0 (AutoDeny):
For example, to set the value data of the PromptSimpleMAPISend registry entry to 1, follow these steps:
Click Start, click Run, type regedit, and then click OK.
Locate and then click the following registry subkey:
Add the Outlk14.adm file that you downloaded in step 2 to your domain controller.
Note The steps to add the .adm file to a domain controller vary, depending on the version of Windows that you are running. Also, because you may be applying the policy to an organizational unit (OU) and not to the whole domain, the steps may vary in this aspect of applying a policy. Therefore, check your Windows documentation for more information.
Add the custom Outlk14-simplemapi.adm file that you downloaded in step 1 to your domain controller.
Under User Configuration, expand Classic Administrative Templates (ADM) to locate the policy node for your template.
Note In Windows XP and Windows Server 2003, expand Administrative Templates.
For Exchange Security Form settings to be set by using Group Policy, you must set the Outlook Security Mode setting to Use Outlook Security Group Policy. To locate that policy setting, expand Classic Administrative Templates (ADM), expand Microsoft Outlook 2010, expand Security, and then click Security Form Settings. In the details pane, double-click Outlook Security Mode. Enable the policy, and then set it to Use Outlook Security Group Policy, as is shown in the following screen shot.
The Simple MAPI options are located in the navigation pane (the left pane) under Security Forms Settings, in the Programmatic Security node, as shown in the following screen shot. To configure the Simple MAPI options, double-click any policy setting in the details pane. For example, double-click Configure Simple MAPI sending prompt to configure what happens when a program tries to send mail programmatically by using SimpleMAPI.
In the dialog box for the policy setting, click Enabled to enable the policy, and then set the desired behavior in the Guard Behavior drop-down.
For example, the following screen shot shows the Guard Behavior options for the Configure Simple MAPI sending prompt setting.
After you finish configuring your Simple MAPI policies, and they are propagated to your Outlook clients, you can verify that the policies are available to Outlook by examining the following registry subkey:
The following screen shot shows the registry of an Outlook client on which all three Simple MAPI policies are configured.
Note The Outlook Security Mode Group Policy setting that you set in step 6 created the AdminSecurityMode value and set it to 3. This indicates that Outlook will use Group Policy for managing programmatic security.