@joelstahre

How you’d go about setting this up really depends on what web server you’re using.

For example, with NGINX, you may setup three server blocks for your domains and then one more for the sub-domains. I’ve provided a basic overview below.

domain1.com

Since you’re not using a WildCard on this domain, the setup would be very simple.

server {
    listen 80;
    server_name domain1.com www.domain1.com;

    ...
    ...
}

domain2.com

Since you’re using a WildCard on this domain, we need to activate that in the server block.

server {
    listen 80;
    server_name domain2.com *.domain2.com;

    ...
    ...
}

domain3.com

Much like the second domain, we have a WildCard, so we need to activate it in the server block.

server {
    listen 80;
    server_name domain3.com *.domain3.com;

    ...
    ...
}

sub.domain3.com

Sub-Domains can be treated just like your main domains, and we’d set them up the same. For each sub-domain, we create an entry and we can set them up with our without a WildCard. Since you’ve indicated that the sub-domain needs a WildCard, we’d activate it as we did with the domains.

server {
    listen 80;
    server_name sub.domain3.com *.sub.domain3.com;

    ...
    ...
}