Just working on a site that is nearing completion & launch. Its running on a newly built windows IIS server. Client just told me that a lot of their previous customers have bookmarked their existing support form, which is located at URL along the lines of "http://www.domain-name.com/Feedback/IncidentSupport.aspx"
Failing that, you will find more info by looking into other methods of "IIS 301 redirect". Since this is not really related to Silverstripe, you'll get a quicker resolution by focussing on IIS. Most of this forum use LAMP stacks.