Ticket #18926: pluggable.php.2.diff

wp-includes/pluggable.php

@@ -433 +433 @@
         try {
                 $phpmailer->Send();
         } catch ( phpmailerException $e ) {
-                return false;
+                return apply_filters( 'wp_mail_send_failed', false, new WP_Error( $e->getCode(), $e->getMessage() ) );
         }
 
         return true;