On occasion, adding an SSL to a WordPress site on the (gs) Grid-Service will cause the site to do an endless redirect to a different site. This might look like the WordPress Redirect Exploit, but it is not. The usual symptom of this is when you go the https: portion of the site and it redirects you somewhere else.
In a case like this, this article from Techhow ([1]) shows how you can get the redirect to stop by following these steps. The domain, example.com, should be substituted for your domain name and the access domain part, s00000.gridserver.com, can be found in the AccountCenter, under the Server Guide:
1) Bring up your Terminal (Mac) or PuTTy (Windows) program.
2) Login to ssh, using this command: ssh example.com@s00000.gridserver.com
3) If you see “Are you sure you want to continue connecting (yes/no)?”, then type in “yes” (without the quotes).
4) You’ll be prompted for your password, type in your SSH/FTP password.
5) At the prompt, type in: find /home/00000/domains/domain_name/html/ -type f -exec sed -i ‘s/HTTP_HOST/SERVER_NAME/g’ {} \;
6) Once this has executed and the prompt re-appears, type: exit
This should take care of the issue. While there are other solutions that can address this, such as a plugin that disables canonical URL’s, http://txfx.net/files/wordpress/disable-canonical-redirects.phps, it was noted that it disabled WordPress’ ability to redirect from things like www. and trailing slashes (not to mention a whole host of other useful things, http://markjaquith.wordpress.com/2007/09/25/wordpress-23-canonical-urls/).
So, a big thank you to our valued (mt) Media Temple customer, Aaron Holbrook, for providing this information.