Fixed: FS#3683 - New gtld - regex issue while defining alias emaildomains

Author: Till Brehm

interface/web/mail/form/mail_aliasdomain.tform.php

@@ -86,7 +86,7 @@
 				1 => array ( 'type' => 'UNIQUE',
 					'errmsg'=> 'source_error_unique'),
 				2 => array ( 'type' => 'REGEX',
-					'regex' => '/^\@[\w\.\-]{2,64}\.[a-zA-Z0-9\-]{2,10}$/',
+					'regex' => '/^\@[\w\.\-]{2,64}\.[a-zA-Z0-9\-]{2,20}$/',
 					'errmsg'=> 'source_error_regex'),
 			),
 			'default' => '',