Cannot renew my SSL Certificate

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My domain is:

I ran this command: sudo certbot renew (--dry-run)

It produced this output:
Saving debug log to /var/log/letsencrypt/letsencrypt.log

Processing /etc/letsencrypt/renewal/

Cert is due for renewal, auto-renewing...
Plugins selected: Authenticator apache, Installer apache
Renewing an existing certificate
Performing the following challenges:
http-01 challenge for
Waiting for verification...
Cleaning up challenges
Attempting to renew cert ( from /etc/letsencrypt/renewal/ produced an unexpected error: HTTPSConnectionPool(host='', port=443): Read timed out. (read timeout=45). Skipping.
All renewal attempts failed. The following certs could not be renewed:
/etc/letsencrypt/live/ (failure)

** DRY RUN: simulating 'certbot renew' close to cert expiry
** (The test certificates below have not been saved.)

All renewal attempts failed. The following certs could not be renewed:
/etc/letsencrypt/live/ (failure)
** DRY RUN: simulating 'certbot renew' close to cert expiry
** (The test certificates above have not been saved.)

1 renew failure(s), 0 parse failure(s)

My web server is (include version): apache 2.4.41

The operating system my web server runs on is (include version):Ubuntu Server 20.04

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

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

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot):v0.40.0

I don't know why it now fails, sometimes the dry run works but later the normal command fails.


Hi @sh98

see your check, created yesterday -

You have two different ipv4 addresses:

Host Type IP-Address is auth. ∑ Queries ∑ Timeout A Obertshausen/Hesse/Germany (DE) - VT-POOL1- dor002ibr101 No Hostname found yes 1 0
A Offenbach/Hesse/Germany (DE) - 1&1 Versatel Deutschland GmbH Hostname: yes 1 0
AAAA yes

The 87 works, the 109 has only timeouts. Looks like the 109 is expired / wrong.


Thx for your Help but how is it possible to have two ip addresses ?


That's always possible, a domain can have a lot of ip addresses, ipv4 and ipv6.

But every ip address must send the same answer. If the answers are different or if one ip address has a timeout -> that's fatal.

-->> Cleanup your dns entries.


Could you tell me how I can do it?


You have to change your dns entries - is one of your name servers.

Check your domain management.


Ok alright I cleaned it up and now it works! Thank you a lot :slight_smile:


The error you received is likely not related to your nameservers. Here's an inquiry into the error:

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