Error code for domain redirect in DH control panel


I need to make sure that my domain redirects are sending an error code of 301 and not 302. Apparently this helps keep your Google PageRank in tact if you change domain names. Right now the Dreamhost control panel redirects only specify “redirect” (302) and not “redirect permanent” (301). Is this in fact correct? If so, can you guys add an option for permanent redirect in the control panel? Thanks.