diff --git a/interface/web/dns/form/dns_soa.tform.php b/interface/web/dns/form/dns_soa.tform.php
index 00c2aacebe09d5caa27d5bf5207aaa290f6ce09e..4481d5aa47ad3582cc9481ef24272e343397aa02 100644
--- a/interface/web/dns/form/dns_soa.tform.php
+++ b/interface/web/dns/form/dns_soa.tform.php
@@ -225,10 +225,14 @@ $form["tabs"]['dns_soa'] = array (
 		'also_notify' => array (
 			'datatype'	=> 'VARCHAR',
 			'formtype'	=> 'TEXT',
-//			'validators'    => array (  0 => array (    'type'  => 'ISIPV4',
+			'validators'    => array (  0 => array (	'type'	=> 'REGEX',
+														'regex' => '/^(((25[0-5]|2[0-4][0-9]|1?[0-9]{1,2})\.){3}(25[0-5]|2[0-4][0-9]|1?[0-9]{1,2})(;){0,1}(\ ){0,1}){0,10}$/',
+														'errmsg'=> 'also_notify_error_regex'
+													),
+//										0 => array (    'type'  => 'ISIPV4',
 //														'errmsg'=> 'also_notify_error_regex'
 //													),
-//									),
+									),
 			'default'	=> '',
 			'value'		=> '',
 			'width'		=> '30',