I just started getting this error this morning on all machines with Thunderbird. I've been trying to sort it out, I'm not seeing any complaints anywhere so far.
email_certificate_error.jpg (44.14 KiB) Viewed 145 times
Validity
Not Before Sun, 24 Aug 2025 16:58:43 GMT
Not After Sat, 22 Nov 2025 16:58:42 GMT
Issuer Name
Organization Let's Encrypt
Not sure what's going on. Their email has been good for about 5 months since the last outage but they've had a lot of issues and outages over the last year or two. I'm looking into alternatives again.
It could be for that specific name you're using that it's invalid. For example, with TLS, mail.mikeserv.com would fail with a certificate error, because the certificate is actually for "server.mikeserv.com", the actual reverse DNS (hostname) of the box. So I use server. instead of the MTX hostname mail.
Perhaps you are no longer supposed to be using mail.hover.com but some other hostname?
P.S. I just remembered, this WAS (only) with Thunderbird, my sylpheed mail client wasn't complaining, just my parents' thunderbird. Because it was the correct thing to do for the certificate anyway, I changed my mail clients to use server. instead of mail.
My configuration hasn't changed in years, I looked it up and they're still showing the same configuration to use, and same hostname. This all started at the same time with all machines and all email addresses and with and without updating Thunderbird. And same day their certificate renewed. Arch has claws-mail, I'll try that and see if it works with it.
Now after updating vanilla Arch it can't find it's root drive. I ran fsck on both it's root and boot drives from CatchyOS and it found no errors. In the meantime it looks like my Thunderbird email is working again. As usual nice of Hover to send out a notification so I wouldn't have to spend all day troubleshooting
