Have been using Mail-in-a-box [1] for about 5 years [1]. I haven't done any maintenance for at least 3 years, besides occasionally clicking restart in the admin

Have been using Mail-in-a-box [1] for about 5 years [1]. I haven't done any maintenance for at least 3 years, besides occasionally clicking restart in the admin webpanel every time it does serious security updates. I don't send a lot of emails from it, but the ones I do are delivered. [1] https://mailinabox.email/ https://mailinabox.email/