RelayForAuth Metabase Property (IIS 6.0)
The RelayForAuth property corresponds to the Allow all computers which successfully authenticate to relay, regardless of the list above check box in the Relay Restrictions dialog box. This value is set to -1 if the check box is selected (that is, allow relay to all those who have authenticated) and is set to 0 if the check box is not selected.
You can configure this property at the following locations in the IIS metabase.
For general code examples, see Code Examples to Configure Metabase Properties.