Situation: We're trying to route all incoming mail from a specific external domain (ex: thiscompany.com) to a single/group of specific email addresses within our company (ex: email@example.com). We're trying to route this mail to that specific address/group internally before any of those emails even reach their intended recipients.
We could simply blacklist the domain using our spam firewall, so none of our users get anything from that specific domain, but we don't want to alert said company to the fact that we're bouncing their emails. Instead we would like to screen those emails.
Setup: Windows 2003 AD environment, single Exchange server, single domain, nothing special about the environment setup that I'm aware of.