tedrek,
I will not to pretend to be an expert at Sendmail, but that is the MTA referenced in previous threads. It has been my experience on every *nix box I have been on that it is a single mbox file. I also admit that Sendmail has been around forever and could probably be configured to cook dinner if you wanted to - so point taken. It doesn't change the fact that this isn't the "out of the box" configuration for Sendmail, so it caught myself (as well as others) off guard.

Cheers - L~R