From d35a89dea7c157ba4afa3a541c313a95c1c2bacd Mon Sep 17 00:00:00 2001
From: Ian Kelling <iank@fsf.org>
Date: Thu, 10 Nov 2022 14:46:41 -0500
Subject: [PATCH] fix stuck on email error

---
 README         |  3 ---
 sysd-mail-once | 18 ++++++++++++++----
 2 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/README b/README
index e463d69..e7fab7e 100644
--- a/README
+++ b/README
@@ -1,8 +1,5 @@
 Log output, conditionally email or print it
 
-Warning: with sysd-log-once, I've found the mail command to block for
-several seconds at least.
-
 The main documentation is availiable via --help and near the top of the
 bash script files which sit next to this file.
 
diff --git a/sysd-mail-once b/sysd-mail-once
index 2f7f4d5..b1a67b8 100755
--- a/sysd-mail-once
+++ b/sysd-mail-once
@@ -24,7 +24,7 @@ case "$1" in
   -h|--help)
     cat <<EOF
 Usage: sysd-mail-once [-t TO_ADDRESS] [-ERRORS] SERVICE COMMAND [ARGS...]
-For systemd timers, email on repeated failure & success after failure.
+For systemd timers, email (with exim) on repeated failure & success after failure.
 
 In the service triggered by the timer, prepend this script to the ExecStart.
 The email will contain the service's logs for the last ERRORS runs.
@@ -81,14 +81,24 @@ if (( code )); then
     fi
   fi
   if $send_mail; then
-    journalctl -u $service.service --after-cursor=$(<$file) | \
-      mail -s "$HOSTNAME: $service exit code: $code" "$to"
+      exim -odf -t <<EOF
+To: $to
+From: $USER@$(hostname -f)
+Subject: $HOSTNAME: $service exit code: $code
+
+$(journalctl -u $service.service --after-cursor=$(<$file))
+EOF
   fi
 else
   if [[ $file ]]; then
     rm -f $file
     if [[ $file == $c$errors ]]; then
-      echo | mail -s "$HOSTNAME: $service success" "$to"
+      exim -odf -t <<EOF
+To: $to
+From: $USER@$(hostname -f)
+Subject: $HOSTNAME: $service success
+
+EOF
     fi
   fi
 fi
-- 
2.30.2