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this post was submitted on 06 Jan 2025
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I selfhost my own mail server (my primary mail in fact).
My LE certs expired on Christmas eve, when I was also getting sick. I didn't realize my mail server was down for a week until about NYE. Luckily Postfix queued all my emails and there was nothing important lost, but I am reevaluating self hosting my mail server. That being said, this was also the worst issue I've faced in over a year of self hosting mail. And it only arose because my dumbass still hasn't automated my certificate rotation.
If you're using let's encrypt, it's worth automating the cert renewals. Even for systems where the automation is difficult and not supported.
It's also worth running some kind of monitoring system. You can check certificates with OpenSSL really easily. Fire off a message to NTFY.
I have the renewal process itself automated, just not the replacement process.
yup, fairly normal. I had to jump through some hoops for my old haproxies