CF8 Mail Spool Directory

After a couple days of CF8, I noticed I wasn't getting the emails I was supposed to be getting. Turns out the CF8 installer, at least in multi-server mode, doesn't set the right permissions on the /WEB-INF/cfusion/Mail subdirectories, so CF can't write out the mail spool files. Flipping them to the right group and allowing group write access solved the issue. I seem to recall having to do that with certain installations of CF7 and CF6.1 as well, but I couldn't tell you what the common the thread was (or if it existed at all).