migrate check for local rcpts to sendmail checks

[etc/mutt.git] / .mutt / sendmail-checks.d / no-local-recipients

diff --git a/.mutt/sendmail-checks.d/no-local-recipients b/.mutt/sendmail-checks.d/no-local-recipients
new file mode 100755 (executable)
index 0000000..fa8de41
--- /dev/null
+++ b/.mutt/sendmail-checks.d/no-local-recipients
@@ -0,0 +1,28 @@
+#!/bin/sh
+#
+# no-local-recipients – prevent messages to local recipients from being sent
+#
+# messages with recipients like foo@$HOSTNAME are an indication that mutt has
+# not expanded the aliases and thus appended $hostname (cf. $use_domain). In
+# my use-case, that's a reason not to send a message.
+#
+# Copyright © 2010 martin f. krafft <madduck@madduck.net>
+# Released under the terms of the Artistic Licence 2.0
+#
+set -eu
+
+shift # $1 is the tmpfile, we don't need that
+
+HOSTNAME=$(hostname --fqdn)
+
+ret=0
+for r in $@; do
+  case "$r" in
+    (*@${HOSTNAME}*)
+      echo >&2 "E: $r seems to be a local recipient, hence I won't send."
+      ret=1
+      ;;
+  esac
+done
+
+exit $ret