diff --git a/includes/general.php b/includes/general.php
index 570d48e..cc02088 100644
--- a/includes/general.php
+++ b/includes/general.php
@@ -640,7 +640,7 @@
 						$line = fgets($fp, 4096);
 					if(substr($line, 0, 3) != "250")
 						continue;
-					fputs($fp, "MAIL FROM: <>\r\n");
+					fputs($fp, "MAIL FROM: <returns@cacert.org>\r\n");
 					$line = fgets($fp, 4096);
 
 					if(substr($line, 0, 3) != "250")