Hi, I just had a wonderful experience finding out that if you run vpopbull as root in 5.3.26 (maybe earlier versions to) that it drops the message into the users Maildir with root as the uid and gid. Didn't this cause me some fun with users calling up saying that they were getting errors. A recursive chown fixed the problem and su'ing to the vpopmail user and running vpopbull seems to deliver with the right permissions, but I would expect the it to autmatically assign the right permissions or switch to the vpopmail user when run.
Maybe this is a feature request more than anything, but I figured I would send this to the list so that someone else doesn't get caught out the same way. Shane