XF 2.2 Site URL with Alias

[XGC xVIPERx XI]

Our site has its primary domain name but we have numerous alias that go directly to the same site. How can I get the alias domain names to work with XenForo? Host has the alias domain names work going to the site. But when logging doesn't work, hence nothing else happens.

 

[briansol]

For seo, this is bad.

Pick a primary.
Park the others on it.
Redirect all to main.