LE is installed on my email server and everything is working fine. I just received a blank email from the Cron Daemon with the subject line below. What caused this and do I need to do something?
“Cron <…@…> /opt/letsencrypt/certbot-auto renew --quiet”
looks like you have configured a “special cron job” that sends such a mail.
Certbot is running two times per day.
So check your cron configuration.
I don’t remember ever receiving this email before and my only LE related cron is:
“36 3 * * * root /opt/letsencrypt/certbot-auto renew --quiet”
So I don’t think it’s running 2x per day. Unless I’m missing something?
When I check /var/log/letsencrypt/letsencrypt.log and …log.1, I see “…Cert not yet due for renewal” and “…no renewal failures”.
I got the same blank email again today. Any thoughts what I should be checking? Thanks.
2x per day is the standard setup.
I have no idea where you have configured that. Certbot doesn't send mails, normal cron jobs don't send mails.
Looks like you use additional tools to create these notifications -> find these and change or remove these.
This is a known bug which is fixed in git and scheduled for release on Monday.
Thanks for letting me know.
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