When we create a child portal we have to go into the portal's settings and manually add the first portal alias. Although this should be automatic as part of the setup... it works.

The problem is when we add a second alias to the child portal. The alias is saved into the database, but when we access the child, the process that directs it doesn't work.

For example:

If I type in the first alias, www.aliasname1.com, the URL resolves to: http://www.mywebsite.com//Default.aspx?alias=aliasname1

If I type in the second, www.aliasname2.com, the URL resolves to www.aliasname2.com... and I get a 404, page not found error.

How do I solve this?

Thanks for your help.

Thanks for the reply.

The DNS appears to be setup correctly, however they do have some a number of redirects setup in IIS. For example, www.mysite.com/your_page_on_mysite. Where your_page_on_mysite is set as a virtual directory and redirected to a page within the site. The goal is to enable a user to type a url rather than make them dig through the site. 

Could this be causing the problem?