From 2ad58dc07ee7f5dc0661c9f0cc515be6f03e3c6c Mon Sep 17 00:00:00 2001
From: Daniel Gibbs <me@danielgibbs.co.uk>
Date: Mon, 27 Mar 2017 18:56:06 +0100
Subject: [PATCH] [hostname] contains invalid character '[' in CentOS 7

[hostname] contains invalid character '[' in CentOS 7 changed [ to (

See https://www.jethrocarr.com/2012/06/10/mailx-contains-invalid-character-2/

There may be a better way to resolve this however this quick fix works
---
 duplicity-backup.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/duplicity-backup.sh b/duplicity-backup.sh
index 213f7f7..932d8ba 100755
--- a/duplicity-backup.sh
+++ b/duplicity-backup.sh
@@ -488,7 +488,7 @@ email_logfile()
       if [ ! -x "${MAILCMD}" ]; then
           echo -e "Email couldn't be sent. ${MAIL} not available." >&2
       else
-          EMAIL_SUBJECT=${EMAIL_SUBJECT:="duplicity-backup ${BACKUP_STATUS:-"ERROR"} [${HOSTNAME}] ${LOG_FILE}"}
+          EMAIL_SUBJECT=${EMAIL_SUBJECT:="duplicity-backup ${BACKUP_STATUS:-"ERROR"} (${HOSTNAME}) ${LOG_FILE}"}
           case ${MAIL} in
             ssmtp)
               mailcmd_ssmtp;;