FS#1212 - IP Address in fetchmail - allow ipv4 or hostname for pop/imap-server

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

@@ -94,7 +94,7 @@ $form["tabs"]['mailget'] = array (
 			'validators' => array (  0 => array ( 'type' => 'NOTEMPTY',
 					'errmsg'=> 'source_server_error_isempty'),
 				1 => array ( 'type' => 'REGEX',
-					'regex' => '/^[\w\.\-]{2,64}\.[a-zA-Z\-]{2,10}$/',
+					'regex' => '/^([\w\.\-]{2,64}\.[a-zA-Z\-]{2,10}|(?:[0-9]{1,3}\.){3}[0-9]{1,3})$/',
 					'errmsg'=> 'source_server_error_regex'),
 			),
 			'default' => '',