Okay, so we're running an internal mail server Mercury 32....Basically it collects from our external email pop provider every 8-10 minutes, we have unlimited file size allowance with them, and all this server does, is allow us to email huge pdf's to each other very fast, which happens quite often.

The problem arises occasionally, when someone from the outside, emails us a file that's 3 megs or more, and Mercury downloads the file, and sends it to the person....but for some reason, the file doesn't get deleted off the pop provider, and that file is the ONLY message, that gets through, while the others sit, piling up on our pop provider. My question is...could it be Mercury stalling out and failing to delete the file, yet downloading all of it (makes 0 sense to me), OR could it be our email provider failing to delete the file on the server.