From 5ce1adb3fe007bc93e5f3390d7e00401e7772418 Mon Sep 17 00:00:00 2001
From: "Kamu, Kvark" <3101171+kamukvark@users.noreply.github.com>
Date: Thu, 3 Mar 2022 14:12:20 +0100
Subject: [PATCH] Fix nextcloud mail Message-ID header

See also: https://github.com/nextcloud/mail/issues/5764
---
 admin_manual/installation/nginx-root.conf.sample | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/admin_manual/installation/nginx-root.conf.sample b/admin_manual/installation/nginx-root.conf.sample
index 99a6da5c1ce..56fd25acf09 100644
--- a/admin_manual/installation/nginx-root.conf.sample
+++ b/admin_manual/installation/nginx-root.conf.sample
@@ -143,6 +143,10 @@ server {
         fastcgi_request_buffering off;
 
         fastcgi_max_temp_file_size 0;
+
+        # Horde, used by nextcloud mail app, needs $_SERVER['SERVER_NAME'] to generate Message-ID header
+        # See also: https://github.com/nextcloud/mail/issues/5764
+        fastcgi_param SERVER_NAME $host;
     }
 
     location ~ \.(?:css|js|svg|gif|png|jpg|ico|wasm|tflite|map)$ {