From b9881d1e7b88d0a8dc5c3cfb9e8f2d02b6529bfa Mon Sep 17 00:00:00 2001
From: mcheng89 <mcheng827@gmail.com>
Date: Fri, 31 Oct 2014 21:52:03 -0400
Subject: [PATCH] check for smtp AUTH extension

---
 modules/mailer/mailer.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/mailer/mailer.go b/modules/mailer/mailer.go
index 758792a35159..df3efb610bc2 100644
--- a/modules/mailer/mailer.go
+++ b/modules/mailer/mailer.go
@@ -82,7 +82,7 @@ func sendMail(hostAddressWithPort string, auth smtp.Auth, from string, recipient
 		return err
 	}
 
-	if auth != nil {
+	if ok, _ := client.Extension("AUTH"); ok && auth != nil {
 		if err = client.Auth(auth); err != nil {
 			return err
 		}