Setting IIS User
Permissions
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1. Provide Logon Locally permissions to all portal users using the collaboration services, like the domain users on the IIS server on which the MSX-A component is running. To do this, navigate to Control Panel à Administrative tools à Local Security Policy à Local Policies à User Rights Assignment. Also ensure that these collaborative users (Domain users) are not present in Deny Logon Locally.
2. Grant permission for all collaborative users on the registry key HKEY_USERS\.Default\Software\Microsoft\Windows NT\CurrentVersion\ Windows Messaging Subsystem\Profiles.
3. All collaborative users (Domain users) should have read/write/delete permissions on the folder where the MSX-A components are deployed-c:\SAPExchangeTransport.
4. The temporary .mmp folder c:\SAPExchangeTransport\mmp should be registered on the IIS server. To do this:
● Start Registry Editor (Regedt32.exe) and go to the following key HKEY_LOCAL_MACHINE/Software/Microsoft/Windows Messaging Subsystem
● On the Edit menu, choose Add Value and enter the following values:
■ String Value: ProfileDirectory
■ Value Data: <Path to the directory you want the temporary files to be created in>. For example: c:\SAPExchangeTransport\mmp.
5. All collaborative users (Domain users) should have read/write/delete permissions on the .mmp folder in our case c:\SAPExchangeTransport\mmp.

For more information about configuration, see the sample document in SAP Note 736541.
See also: