How to troubleshoot subdomain issue on Aegir I set up Aegir on a rackspace server. Everything works correctly. I then create a new site and set the url to testname.mydomain.com. After Aegir is don provisioning the site I go to the front page at testname.mydomain.com and see my new site. The front page works fine, but every other page, gets a page not found error, so when I attempt to login I'm unable. How do I go about troubleshooting this issue.

So it turns out this is somehow related to platform, I added another platform based on makefile (for open atrium) and it seems to work correctly, I'm not really sure why this would happen, but I figured I would update incase anyone else is having the seam issues.
Your platform is most likely missing the .htaccess file in its top-level directory, or (less likely, or else the Aegir interface itself would likely show the same problem) mod_rewrite is not enabled on your site.

See if you can get to http://testname.mydomain.com/?q=user

If that works, but http://testname.mydomain.com/user doesn't, then your .htaccess file is missing or being ignored by Apache.