I received a certificate expiry warning today from lets encrypt.
I think it is great that lets encrypt is offering not only a free signing service but also warnings before the certificate expires.
Unfortunately I received the email on the same day the certificate is going to expire (The warning literally said 0 days) I checked and no previous e-mails were sent. So by the time I saw the e-mail the certificate was already expired. And since I had to solve some issues which caused the certbot to crash on my server it was a very stressing start for the weekend.
I’m not sure if this is a known issue and where it should be reported.
Oh Great to see this is already got fixed.
I guess I received the warning since the mailer was finally working, and it was just bad (or maybe good) luck that it happened on the day my certificate expired.
I managed to renew the cert and everything is working at the moment (I should probably edit my renew script to send me an email if certbot fails for any reason)
There is also a bash script (checkssl ) and a website ( letsmonitor.org ) which can also be used to regularly check your website and email you if it's close to renewal time (and probably others I'm not aware of )