Multisite Installer Issuse

Can someone please tell me why I am getting the following warning message when attempting to configure a WordPress on-demand domain-based multisite on my Linux dedicated server? After running the network installer, I have checked the random hostname with http://mxtoolbox.com/DNSLookup.aspx and the random hostname points to the correct IP address. Here’s the warning message:
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Warning! Wildcard DNS may not be configured correctly!
The installer attempted to contact a random hostname (bcd4a1.mydomain.org) on your domain.
To use a subdomain configuration, you must have a wildcard entry in your DNS. This usually means adding a * hostname record pointing at your web server in your DNS configuration tool.
You can still use your site but any subdomain you create may not be accessible. If you know your DNS is correct, ignore this message.
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Here’s what I have in my cPanel/WHM configuration:
1) An A record in the DNS zone file for mydomain.org that looks like this:
* 14400 IN A (IPv4 address of mydomain.org)
2) A subdomain in the cPanel account for mydomain.org that looks like this:
*.mydomain.org
and points to the location where wp-config.php resides (one directory level above /public_html).
3) The following code block in pre_main_global.conf. I’m running Apache 2.4.18 (cPanel) and EasyApache4:
<VirtualHost (IPv4 address of mydomain.org):80>
ServerName mydomain.org:80 (I’ve tried it with and without this line)
ServerAlias *.mydomain.org
DocumentRoot /home/mycpanelaccountname/public_html
<Directory “/home/mycpanelaccountname/public_html”>
AllowOverride All
</Directory>
</VirtualHost>
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Note:
/etc/apache2/conf/httpd.conf came preconfigured with following on line 30:
Include “/etc/apache2/conf.d/includes/pre_main_global.conf”

Thank you for your help!
Don