[ This question was also asked on StackOverflow. ]

From the source:

if ($strict) {
        TRACE("Using strict validation");
        $DOMparser->setValidationScheme("$XML::Xerces::AbstractDOMPars
+er::Val_Auto");
        $DOMparser->setIncludeIgnorableWhitespace(0);
        $DOMparser->setDoSchema(1);
        $DOMparser->setDoNamespaces(1);
        $DOMparser->setValidationSchemaFullChecking(1);
        $DOMparser->setLoadExternalDTD(1);
        $DOMparser->setExitOnFirstFatalError(1);
        $DOMparser->setValidationConstraintFatal(1);
} else {
        TRACE("Using no validation");
        $DOMparser->setValidationScheme("$XML::Xerces::AbstractDOMPars
+er::Val_Never");
        $DOMparser->setDoSchema(0);
        $DOMparser->setDoNamespaces(0);
        $DOMparser->setValidationSchemaFullChecking(0);
        $DOMparser->setLoadExternalDTD(0);
}
[download]

Notice the setLoadExternalDTD setting is only true in strict validation mode.

Using the following should do the trick:

my $validator = XML::Validate::Xerces->new( strict_validation => 1 );
[download]

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