From 5e3ce44f09c9994ea77ac6befb7ab4aed3a346a4 Mon Sep 17 00:00:00 2001
From: Evgeny <nauevg@yandex.ru>
Date: Thu, 26 Mar 2020 23:27:04 +0800
Subject: [PATCH] add MAIL_SUBJECT_SUFFIX variable

One can add variable in account.conf like this for notification be more clear on what server this occurs:
MAIL_SUBJECT_SUFFIX=$(curl ifconf.me)
or with wget
MAIL_SUBJECT_SUFFIX=$(wget -q -O - ifconf.me)
---
 acme.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/acme.sh b/acme.sh
index f5e79ee8..47e157f8 100755
--- a/acme.sh
+++ b/acme.sh
@@ -6069,6 +6069,11 @@ _send_notify() {
   _nhooks="$3"
   _nerror="$4"
 
+  if [ ! -z "$MAIL_SUBJECT_SUFFIX" ]; then
+    _nsubject="$_nsubject $MAIL_SUBJECT_SUFFIX"
+    _debug "The MAIL_SUBJECT_SUFFIX is $MAIL_SUBJECT_SUFFIX."
+  fi
+
   if [ "$NOTIFY_LEVEL" = "$NOTIFY_LEVEL_DISABLE" ]; then
     _debug "The NOTIFY_LEVEL is $NOTIFY_LEVEL, disabled, just return."
     return 0