Timeout during connect (likely firewall problem)

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My domain is: gate.cj.co.id

I ran this command: sudo certbot certonly --webroot -w /var/www/html -d gate.cj.co.id

It produced this output:
Failed authorization procedure. gate.cj.co.id (http-01): urn:ietf:params:acme:error:connection :: The server could not connect to the client to verify the domain :: During secondary validation: Fetching http://gate.cj.co.id/.well-known/acme-challenge/BxAW3uTq_-VJjNEBZaA1Zr8cbrvshY7x1KSN9r_vqDY: Timeout during connect (likely firewall problem)

IMPORTANT NOTES:

  • The following errors were reported by the server:

    Domain: gate.cj.co.id
    Type: connection
    Detail: During secondary validation: Fetching
    http://gate.cj.co.id/.well-known/acme-challenge/BxAW3uTq_-VJjNEBZaA1Zr8cbrvshY7x1KSN9r_vqDY:
    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

My web server is (include version): Apache 2.4

The operating system my web server runs on is (include version): Ubuntu Server 18.04

My hosting provider, if applicable, is: VPS

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): 0.31.0

Hi @al_zain92

“During secondary validation” is important.

Read

Letsencrypt checks your domain from different networks.

The error says: The main Letsencrypt servers are able to connect your domain. The additional servers are blocked.

May be you block some ip addresses or you have some regional filters.

I did’nt block some IP, before I also disasable ufw but still got error.
I use dedicated server and IP from provider
Cloud you tell how to check whether my ip accessable from letsencrypt server?

Btw I tried using staging environment successful

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