Multisite Installation (Attempt) Goes To My Main Site
Indeed this is not a DNS issue, the problem here is your sites directory is located in the wrong directory. It shouldn't be under all but in the root of sites. In your case it should be:



sites/jackstahlco.com/settings.php
sites/jackstahlco.com/files
sites/meadowlarknm.com/settings.php
sites/meadowlarknm.com/files


If you want the Drupal installation process popping up, you need to put an empty array connection info in the settings.php of the desired website.



$databases = array ();


The sites.php should be like this:



$sites = array(
    'jackstahlco.com' =&gt; 'default',
    'meadowlarknm.com' =&gt; 'meadowlarknm.com',
);


You don't need to specify the www prefix.