Custom Validation Filter for one form only

I have this custom validation function that works well with CF7 form ID 585 but is blocking submission of all other CF7 forms. How can I make it only apply to form 585?

function faxormail_validation($result,$tag){
		if ($_SERVER["REQUEST_METHOD"] == "POST"){
			if (empty($_POST["addressroi"])&& empty($_POST["faxroi"]) ){
				//In the result, the first variable in ()is the tag on the form where you want your
				//message to appeare in CF7 and the second is the message you want to send as the result
				$result->invalidate( "addressroi", "* * * * * *// YOU MUST ENTER AN MAILING ADDRESS OR FAX# //* * * * * *" );
			}
		return $result;
		}
	}
	add_filter( 'wpcf7_validate_text', 'faxormail_validation', 10, 2 ); // text field
	add_filter( 'wpcf7_validate_text*', 'custom_text_validation_filter', 10, 2 ); //Req. text field.

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