From 41caaafec9ab827ad5c9833d0362c1212a70a391 Mon Sep 17 00:00:00 2001
From: Hadi Nategh <hnategh@gmail.com>
Date: Mon, 12 Jun 2017 11:04:10 +0200
Subject: [PATCH] Cover more range of long field headers

---
 api/src/Mail.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/api/src/Mail.php b/api/src/Mail.php
index 33c388adea..b107fe8d99 100644
--- a/api/src/Mail.php
+++ b/api/src/Mail.php
@@ -7031,7 +7031,7 @@ class Mail
 				$needsReplacement = false;
 				foreach((array)$value as &$val)
 				{
-					if (strlen($val) > 998)
+					if (strlen($val)+ strlen($header) > 900)
 					{
 						$needsReplacement = $needsFix = true;
 					}