We had a site set up at temp.domain.com and we moved it to just domain.com. I went into portals and removed the temp portal and just left domain.com. The problem is, all of the links generated by dnn are still pointing to temp.domain.com. I went into one of the text/html pages and these links were look hard coded as temp.domain.com/page.aspx. If these links were created by the dnn page selector why are they hard coded like that? Also, what is the best way to go about changing these links?

If you don't pay attention, the editor will insert links like that. I generally try to remember to cut off the domain name in the URL before accepting the link.

The best fix is the free F3 module from Engagesoftware.com. Install it, and you can then to global cut and paste from all of the HTML modules on your site. That's where most of your problems will lie.

If there are other modules with absolute links, you'll have to correct them one at a time.

Ok, so here is the strange thing. I went in to re add the binding for temp.domain.com just for the sake of making things work until I could fix the links. Once I did that, then the links change to domain.com. This is a strange thing that I have never seen before.

Do check the contents of the modules to see if the links are absolute or relative.  If the changes happen only because of changes to IIS, I'd guess that you don't have absolute links.