Problems renewing cert, limit hit


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We had a cronjob that runs once each day but we had our port 80 blocked by firewall. We unblocked it and re-ran manually the script but it fails with this message.

Please help as this site is in production. Thanks.

My domain is:

I ran this command:./certbot-auto renew

It produced this output:
[root@cell_collector download]# ./certbot-auto renew

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: Failed authorization procedure. (http-01): urn:ietf:params:acme:error:unauthorized :: The client lacks sufficient authorization :: Invalid response from “\n\n404 Not Found\n\n

Not Found

\n<p”. Skipping.

Processing /etc/letsencrypt/renewal/

Cert not yet due for renewal
All renewal attempts failed. The following certs could not be renewed:
/etc/letsencrypt/live/ (failure)

The following certs are not due for renewal yet:
/etc/letsencrypt/live/ expires on 2019-03-26 (skipped)
All renewal attempts failed. The following certs could not be renewed:
/etc/letsencrypt/live/ (failure)

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


My web server is (include version):apache 2.2.15

The operating system my web server runs on is (include version): Centos 6.10

My hosting provider, if applicable, is: self hosted

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


This could be related to some problems that the Apache plugin encounters with the way CentOS 6 configures Apache by default.

What does this show:

apachectl -S


Many thanks!

I appears it was a misconfiguration introduced in our virtualhost configs. It was very hard to troubleshoot but it is know working again.

I appreciate your help!

Best regards.

closed #4

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