Cause: The OVAL check of SCAP rule postfix_prevent_unrestricted_relay was too strict and it did not account for Postconf configuration assignment statements which contained white spaces around the "=" sign. Consequence: The rule was reported as failing in the final report even though there existed a configuration technically meeting requirements of the rule. Fix: The rule was modified so that the check accepts statements with white spaces around the "=" sign. Result: Rule is now marked as passing in the final report for correct configuration statements.