PC NTMMTA: Cannot Use NT System Account with NT MMTA

• Microsoft Mail Multitasking MTA for Windows NT, version 3.5

SYMPTOMS

The Microsoft Windows NT System account cannot be used as the service account with the Microsoft Mail Multitasking MTA for Windows NT (NT MMTA).

The LocalSystem account is the account used by the operating system; it has a security identifier (SID) that contains all zeroes. By default, this account has almost complete control of the local computer, but no rights in the network.

Because this user account has no rights to access the network, the following error will occur when you start the service:

   Could not start the MS Mail External - (Instance Name) service on
   \\Computer Name

   Error 2140: An internal Windows NT error occurred.

When the service is started the NT MMTA allows Win32 to validate the UNC; however, the NT MMTAs Service Type is what validates that the path specified is actually a valid PO.

WORKAROUND

To workaround this problem, create a Windows NT user and assign the Log On as Service right.

To assign the service account the right to log on as a Windows NT service, follow the steps below:

1. From the Administrative Tools group, run User Manager.

2. From the Policies menu, choose User Rights.

3. In the User Rights Policy dialog box, select the Show Advanced User Rights check box. Select Log On as a Service, and choose the Add button.

   If Log On as a Service does not appear, make sure the Show Advanced User Rights check box is selected.

4. In the Add Users and Groups dialog box, select the domain name. Select the Show Users button. Select the user account, and select the Add button.

   If the newly created service account does not appear in the Names box, make sure the List Names From box displays the computer name of the local server under which the user was logged onto.

5. When the User Rights Policy dialog box displays the service account name in the Grant To box, select the OK button.

6. When the User Rights Policy dialog box correctly displays the service account with the Log On as a Service, select the OK button.

   The service account for this site is now ready to use.