Timeout during connect (likely firewall problem)

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I ran this command:
certbot renew --dry-run

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


Processing /etc/letsencrypt/renewal/e3.dtadata.com.conf


Cert is due for renewal, auto-renewing…
Plugins selected: Authenticator apache, Installer apache
Starting new HTTPS connection (1): acme-staging-v02.api.letsencrypt.org
Renewing an existing certificate
Performing the following challenges:
http-01 challenge for e3.dtadata.com
Waiting for verification…
Challenge failed for domain e3.dtadata.com
http-01 challenge for e3.dtadata.com
Cleaning up challenges
Attempting to renew cert (e3.dtadata.com) from /etc/letsencrypt/renewal/e3.dtadata.com.conf produced an unexpected error: Some challenges have failed… Skipping.
All renewal attempts failed. The following certs could not be renewed:
/etc/letsencrypt/live/e3.dtadata.com/fullchain.pem (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/e3.dtadata.com/fullchain.pem (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)

IMPORTANT NOTES:

  • The following errors were reported by the server:

    Domain: e3.dtadata.com
    Type: connection
    Detail: Fetching
    http://e3.dtadata.com/.well-known/acme-challenge/U4UCH8bN5ga2VvUhxq56RHb835nBIuftxyw1_lcs7mE:
    Timeout during connect (likely firewall problem)

    To fix these errors, please make sure that your domain name was
    entered correctly and the DNS A/AAAA record(s) for that domain
    contain(s) the right IP address. Additionally, please check that
    your computer has a publicly routable IP address and that no
    firewalls are preventing the server from communicating with the
    client. If you’re using the webroot plugin, you should also verify
    that you are serving files from the webroot path you provided.

My web server is (include version): Apache 2.4.6

The operating system my web server runs on is (include version): CentOS 7

My hosting provider, if applicable, is:

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

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot): certbot 0.38.0

1 Like

Interesting…

Can you please run this command

certbot certifcates

And post the results

Cheers

Trying to connect to http://e3.dtadata.com/ times out for me too.

Is there a firewall blocking port 80?

Can you connect to it?

From other ISPs?

I can’t even ping your IP, but I can access other IPs on the same /24, so it seems like it’s probably a firewall issue.

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