From a2afb101cdd4a86e1fb7ed6d04a26ffc436fbcee Mon Sep 17 00:00:00 2001
From: Hypolite Petovan <hypolite@mrpetovan.com>
Date: Sat, 25 Jun 2022 05:35:24 -0400
Subject: [PATCH] Fix off-by-one error in Message ID header count check in
 Util\Emailer

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

diff --git a/src/Util/Emailer.php b/src/Util/Emailer.php
index 1341aaf33e..d045698233 100644
--- a/src/Util/Emailer.php
+++ b/src/Util/Emailer.php
@@ -141,7 +141,7 @@ class Emailer
 				$countMessageId += count($value);
 			}
 		}
-		if ($countMessageId > 0) {
+		if ($countMessageId > 1) {
 			$this->logger->warning('More than one Message-ID found - RFC violation', ['email' => $email]);
 		}