I've been trying to find out what /var/spool/blackhole/mime directory is used for. Blackhole is a Spam/Virus/Address blocker and works with qmail. I did a search on google, but it didn't yield much. I thought this might be a good experiment to try different search systems, so I have tried Yahoo and MSN Search. I got no results from search.msn.com. Yahoo gave results that were similar to Googles.

All in all, the search did not yield the answer I was looking for.