CNAME alias, can set www but not without

Yes, do it that way ??

Thanks Ipstenu, it is working. But I really don’t understand why it is working.

externaldomain.com is not in CNAME, so why is it still pointing to our domain https://www.ourdomainwithwordpressmultisite.com?

And because it seems that it is pointing, could we also delete the mapping of externaldomain.com? What would happen then?

If you delete the mapping of externaldomain.com then WORDPRESS won’t know what to do with it. It’ll probably 404.

I don’t know why externaldomain.com is working when it’s not in CNAME. It’s probably stupid obvious, though.

Yeah,

So it seems that some webhosting providers use the CNAME record of www also for the non-www URL. And other providers don’t, so you have to make this CNAME record manually. Am I right?

Strange thing is, I also have another client with external domain site.externaldomain.com which is CNAME’d to https://www.ourdomainwithwordpressmultisite.com. They also CNAME’d https://www.site.externaldomain.com to that URL. But for that client I only made one domain mapping: site.externaldomain.com and both work, www and non-www!

How’s that possible!

I have absolutely no idea. DNS stuff is just shy of witchcraft to me.

Apache is magic. ?? As long as the domains are tossed at the right server, apache sorts out where (what folder) to send the request.