Help tracking down a weird error with Apache and local / remote connections.

[Spork Schivago <sporkschivago@xxxxxxxxx>]

I have a bit of a weird problem that I'd like some help tracking down.   I'm pretty sure it's something with Apache.   In my Apache 2.4.25 (cPanel) config file, I have the ServerAliases disabled.   There's a "catch-all" entry for unbound IPs, that look like this:

<VirtualHost *>

    ServerName myhostname.mydomain.com

    DocumentRoot /var/www/html

    ServerAdmin myrealemail@xxxxxxxxxxxxx

    <IfModule suphp_module>

        suPHP_UserGroup nobody nobody

    </IfModule>

</VirtualHost>

Further down, I have a VirtualHost entry for mydomain.com, which has a DocumentRoot of /home/<myusername>/public_html

I setup a test file, /home/<myusername>/public_html/.well-known/acme-challenge/test that says www.mydomain.com-test.

Then I setup another test file, /var/www/html/.well-known/acme-challenge/test that says myhostname.mydomain.com-test

I have .htaccess files in /home/<myusername>/public_html that redirect all traffic to secure ports.   I have cPanel installed and have manually setup subdomains for the various cPanel stuff.

Anyway, when I run the following command on the remote server:
   curl http://www.mydomain.com/.well-known/acme-challenge/test

I see the 301 redirect.   When I run:
   curl https://www.mydomain.com/.well-known/acme-challenge/test
I see the:
   www.mydomain.com-test


However, when I run those commands on my local Linux box instead of the remote server that's running Apache, I see:
  curl http://www.mydomain.com/.well-known/acme-challenge/test

  myhostname.mydomain-test

  curl https://www.mydomain.com/.well-known/acme-challenge/test
  www.mydomain.com-test


It's not just curl, lynx, the command line web browser, does the same thing.   On the remote computer that's running Apache, for some reason, I'm seeing different results than I am when I run the commands on my local Linux box.

Any idea what's going on?

Thanks!

Sincerely,
Ken Swarthout