Steps to recreate:
1- Configure the QuickBuild server to accept connections over HTTPS port 8899.
2- Prevent access to the server over HTTP using IPTables.
3- Sign in over HTTPS.
4- Click the "Sign out" link.

Expected results:
User should be redirected to the login page over HTTPS port 8899.

Actual results:
User is redirected to the login page over HTTP port 8810. However because of the IPtables configuration this is blocked.

Please see the forum post linked below for additional details:
http://forum.pmease.com/viewtopic.php?f=1&t=3658