Good practices - Disable messaging during maintenance?


I have a Yunohost server with some apps and with its mail server fully functional, and I use mail (through IMAP) and XMPP intensively.

Now imagine I have to troubleshoot my Yunohost server because of whatever reason and I might end up having to restore a previous snapshot of the whole Yunohost server.

I guess it would be a good idea to disable the mail server during that troubleshooting period, just in case an incoming mail arrives during that time and gets silently lost forever if a previous snapshot is restored.

The same goes for XMPP and other messaging apps.

Do you do so? How? Do you stop any service during that time? Which ones? Or do you simply close those apps’ incoming ports during that time?


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