Removing some links in payload but not all

Thanks for the input guys. Ok so the goal is to allow some URLs to be present in the pages and have some scrubbed. There is a data group of hosts (www.domain.com) that needs to be checked to see if the link needs to be scrubbed or not. If the url contains a host from the DG it is to be left alone, otherwise it needs to be x'ed out. Make sense?