Index: branches/5.3.x/core/units/helpers/mailbox_helper.php
===================================================================
diff -u -N -r15483 -r16226
--- branches/5.3.x/core/units/helpers/mailbox_helper.php	(.../mailbox_helper.php)	(revision 15483)
+++ branches/5.3.x/core/units/helpers/mailbox_helper.php	(.../mailbox_helper.php)	(revision 16226)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: mailbox_helper.php 15137 2012-03-04 08:06:21Z alex $
+* @version	$Id: mailbox_helper.php 16226 2015-09-01 08:21:44Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -261,9 +261,9 @@
 			$good['fromemail'] = $esender->ExtractRecipientEmail($this->headers['from']);
 			$good['fromname'] = $esender->ExtractRecipientName($this->headers['from'], $good['fromemail']);
 
-			// Get the list of recipients
-			if (!$verify_callback[0]->$verify_callback[1]($callback_params)) {
-				// error: mail is propably spam
+			// Get the list of recipients.
+			if ( !call_user_func($verify_callback, $callback_params) ) {
+				// Error: mail is probably spam.
 				return false;
 			}
 
@@ -356,7 +356,7 @@
 				'Size'				=> strlen($message),
 			);
 
-			return $process_callback[0]->$process_callback[1]($callback_params, $fields_hash);
+			return call_user_func($process_callback, $callback_params, $fields_hash);
 		}
 
 		/**
@@ -492,4 +492,4 @@
 			$parts['headers'] = $decoded->headers; // headers of next parts overwrite previous part headers
 		}
 
-	}
\ No newline at end of file
+	}