From: Tim Düsterhus <duesterhus@woltlab.com>
Date: Mon, 15 Feb 2021 11:32:40 +0000 (+0100)
Subject: Set fallback Message-ID in UserNotificationHandler::sendInstantMailNotification()
X-Git-Tag: 5.4.0_Alpha_1~252^2~1
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=cde15eae6f4fb7cb9f8502beac1c91734fac2aca;p=GitHub%2FWoltLab%2FWCF.git

Set fallback Message-ID in UserNotificationHandler::sendInstantMailNotification()
---

diff --git a/wcfsetup/install/files/lib/system/user/notification/UserNotificationHandler.class.php b/wcfsetup/install/files/lib/system/user/notification/UserNotificationHandler.class.php
index 4cb958896f..f6fca466a5 100644
--- a/wcfsetup/install/files/lib/system/user/notification/UserNotificationHandler.class.php
+++ b/wcfsetup/install/files/lib/system/user/notification/UserNotificationHandler.class.php
@@ -774,6 +774,12 @@ class UserNotificationHandler extends SingletonFactory
 
             if (isset($message['message-id'])) {
                 $email->setMessageID($message['message-id']);
+            } else {
+                $email->setMessageID(\sprintf(
+                    'com.woltlab.wcf.genericNotification/%d/%d',
+                    $notification->notificationID,
+                    TIME_NOW
+                ));
             }
             if (isset($message['in-reply-to'])) {
                 foreach ($message['in-reply-to'] as $inReplyTo) {