When i use formmail, I'm getting the "bad referer, add it to the @referers variable" blah blah. I searched it on this forum and found no answers. No, this is not a new domain (unless 2+ years is new), and yes, it is hosted with dreamhost (2+ years). That should answer the two common questions asked of others who had this problem.
This used to work and nothing has changed. This seems to be a recurring problem for dream host users.