diff --git a/includes/mail.inc b/includes/mail.inc
index 6481bac..4a900eb 100644
--- a/includes/mail.inc
+++ b/includes/mail.inc
@@ -123,8 +123,8 @@ function drupal_mail($module, $key, $to, $language, $params = array(), $from = N
   if ($default_from) {
     // To prevent e-mail from looking like spam, the addresses in the Sender and
     // Return-Path headers should have a domain authorized to use the originating
-    // SMTP server. Errors-To is redundant, but shouldn't hurt.
-    $headers['From'] = $headers['Sender'] = $headers['Return-Path'] = $headers['Errors-To'] = $default_from;
+    // SMTP server.
+    $headers['From'] = $headers['Sender'] = $headers['Return-Path'] = $default_from;
   }
   if ($from) {
     $headers['From'] = $from;