Adding Let's Encrypt SSL Certificate from Security tab did not work

Posted November 12, 2019 3.1k views
Let's Encrypt

I added a Let’s Encrypt SSL through the security tab but from what I can tell, the server doesn’t seem like it’s open to communication on port 443.

I did:

sudo apache2ctl -S

this was the response:

AH00558: apache2: Could not reliably determine the server’s fully qualified domain name, using Set the ‘ServerName’ directive globally to suppress this message
VirtualHost configuration:
*:80 (/etc/apache2/sites-enabled/000-default.conf:4)
ServerRoot: “/etc/apache2”
Main DocumentRoot: “/var/www/html”
Main ErrorLog: “/var/log/apache2/error.log”
Mutex watchdog-callback: usingdefaults
Mutex rewrite-map: using
Mutex default: dir=“/var/run/apache2/” mechanism=default
Mutex mpm-accept: usingdefaults
PidFile: “/var/run/apache2/”
Define: DUMP
User: name=“www-data” id=33
Group: name=“www-data” id=33

the non https version of the site works fine. but need SSL for ecommerce.

please advise. thank you!

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4 answers

Hello, @garfield1979

Could you please let me know if you’ve followed our tutorial for installing LE SSL -

What’s the exact error when you access the site via https? Also is port 443 open for incoming connections? You can also copy/paste the content of your Apache config so we can have a look.

Let me know how it goes.


by Kathleen Juell
by Erika Heidi
Let's Encrypt is a Certificate Authority (CA) that provides an easy way to obtain and install free TLS/SSL certificates, thereby enabling encrypted HTTPS on web servers. In this tutorial, you will use Certbot to obtain a free SSL certificate for Apache on Ubuntu 18.04 and set up your certificate to renew automatically.
  • Thanks so much for your reply. So I didn’t know you needed to go through with this step when registering a let’s encrypt through the security tab in the admin panel.

    So I started through the steps and a few things didn’t match up for me..
    in the tutorial:
    sudo nano /etc/apache2/sites-available/your_domain.conf
    in my case
    sudo nano /etc/apache2/sites-available/000-default.conf

    in the tutorial the configuration configuration file looks for

    ServerName your_domain;

    But in my case it was ServerName @domain;

    I replaced it with:

    When I ran:
    sudo apache2ctl configtest
    I got:
    AH00558: apache2: Could not reliably determine the server’s fully qualified domain name, using Set the ‘ServerName’ directive globally to suppress this message
    Syntax OK

    When I tried:
    sudo ufw status
    it returned
    Status: inactive

    I’m not sure how to continue


    • I can see that the configuration file is okay:

      Syntax OK

      You can use netstat to see if the port is open:

      netstat -plunta | grep 443

      Let me know how it goes.


      • I get:

        tcp 0 1 LAST_ACK

        looks like 443 doesn’t exist

        • You can try to open the port using iptables:

          iptables -A INPUT -p tcp -m tcp –dport 443 -j ACCEPT
          service iptables save
          service iptables restart

          Also in the apache config file do you have a block for 443/SSL - <VirtualHost *:443>


          • Ok I added
            <VirtualHost *:443></VirtualHost>
            to the config file, the sytax checks out.

            I tried:
            iptables -A INPUT -p tcp -m tcp –dport 443 -j ACCEPT

            it says

            Bad argument `–dport’

You might need to enter it manually instead of copy/paste it because of the “-” before dport.



I’m glad you’ve sorted this. :)