From 773e1d4e059fce80bb92bd43f3c23ab5c764b2d0 Mon Sep 17 00:00:00 2001
From: Honza Hommer <honza@cnt.cz>
Date: Sun, 12 May 2019 00:34:46 +0200
Subject: [PATCH] use hostname function instead of HOSTNAME env variable

---
 notify/sendmail.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/notify/sendmail.sh b/notify/sendmail.sh
index 3964e904..162b5393 100644
--- a/notify/sendmail.sh
+++ b/notify/sendmail.sh
@@ -27,7 +27,7 @@ sendmail_send() {
 
   SENDMAIL_FROM="${SENDMAIL_FROM:-$(_readaccountconf_mutable SENDMAIL_FROM)}"
   if [ -z "$SENDMAIL_FROM" ]; then
-    SENDMAIL_FROM="$USER@$HOSTNAME"
+    SENDMAIL_FROM="$USER@$(hostname -f)"
     _info "The SENDMAIL_FROM is not set, so use the default value: $SENDMAIL_FROM"
   fi
   _saveaccountconf_mutable SENDMAIL_FROM "$SENDMAIL_FROM"