Fail on renewal

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My domain
the problem concerns mail adresses on

I ran this command:
certbot renew

It produced this output:

MThe following certs are not due for renewal yet:
/etc/letsencrypt/live/ expires on 2020-09-22 (skipped)
/etc/letsencrypt/live/ expires on 2020-09-25 (skipped)
/etc/letsencrypt/live/ expires on 2020-09-22 (skipped)
/etc/letsencrypt/live/ expires on 2020-09-22 (skipped)
No renewals were attempted.

My web server is (include version):
apache 2.4

The operating system my web server runs on is (include version):
Debian 9

My hosting provider, if applicable, is:

I can login to a root shell on my machine (yes or no, or I don’t know):

I’m using a control panel to manage my site (no, or provide the name and version of the control panel):
No more

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot):

All was workin since monthes but today thunderbird started to complain about my imap server is rejected by thunderbird saying “Outdated Information” and it wouldn’ let me see the certicate.
How can I see the certificate presented by my server to Thunderbird ?

Hi @kmc

there is an expired certificate, expired yesterday.

Update your Dovecot.

You could use openssl if you like:

$ openssl s_client -connect -starttls imap -showcerts 2>/dev/null | openssl x509 -noout -subject -issuer -dates
subject=CN =
issuer=C = US, O = Let's Encrypt, CN = Let's Encrypt Authority X3
notBefore=May 20 13:19:52 2020 GMT
notAfter=Aug 18 13:19:52 2020 GMT

But yes, you will likely want to restart Dovecot, and probably add a --deploy-hook "service dovecot reload" or something to Certbot.

Thanks ! Restarting server services did the trick

great ! Thanks !

So I’d like to restart services after any renew. How should I do that ?


not the certificate your Dovecot sends. There is the old certificate.

May be you have to restart your Dovecot.

Use Openssl to check your Dovecot, there you see your old certificate.

Yes restarting mail services did it. How can I do that autmatically after each renewal with certbot ?

You have already the answer.

Added --deploy-hook “service dovecot reload” to the certbot command I have in crontab:

  • 7,19 * * * certbot -q --deploy-hook “service dovecot reload” renew

Hope it will work next renewal
Thank you all

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