added tool to restart mailservers after cert changed

README.md

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+Collection of Scripts an Tools to handle small "problems" of ISPConfig

le-mailserver-restart.path

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+[Unit]
+Description="Monitor the mailserver certificate files to trigger a e-mail services restart after the certificates has been renewed"
+
+[Path]
+PathModified=/root/.acme.sh/mail.example.com/
+Unit=le-mailserver-restart.service
+
+[Install]
+WantedBy=multi-user.target

le-mailserver-restart.service

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+[Unit] 
+Description="Run script to restart Postfix and Dovecot after the certificate has been renewed"
+
+[Service]
+ExecStart=/usr/local/bin/le_mailserver_restart.sh

le_mailserver_restart.sh

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+#!/bin/sh
+### BEGIN INIT INFO
+# Provides: LE MAILSERVER CERT AUTO UPDATER
+# Required-Start: $local_fs $network
+# Required-Stop: $local_fs
+# Default-Start: 2 3 4 5
+# Default-Stop: 0 1 6
+# Short-Description: LE MAILSERVER CERT AUTO UPDATER
+# Description: Restart mail server automatically when a new Let's Encrypt certificate is issued.
+### END INIT INFO
+systemctl restart postfix
+systemctl restart dovecot

restart_services_on_cert_update.md

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+# LetsEncrypt
+
+from: https://www.howtoforge.com/securing-your-ispconfig-3-managed-mailserver-with-a-valid-lets-encrypt-certificate/
+
+
+``` sh
+nano /usr/local/bin/le_mailserver_restart.sh
+```
+
+``` sh
+chmod +x /usr/local/bin/le_mailserver_restart.sh
+```
+
+
+``` sh
+nano /etc/systemd/system/le-mailserver-restart.service
+```
+
+```sh
+nano /etc/systemd/system/le-mailserver-restart.path
+```