Next qmail 25

Safe Delivery

The standard Unix mailbox format is called mbox

        From mjd@plover.com Sat Nov 27 22:13:37 2004
        Return-Path: <mjd@plover.com>
        Delivered-To: mjd-final-delivery-1@plover.com
        Received: (qmail 4225 invoked by uid 119); 27 Nov 2004 22:13:37 -0000
        ...
        I like pie

        From mjd@plover.com Sat Nov 27 22:18:39 2004
        Return-Path: <mjd@plover.com>
        ...

This is a really crappy format
- What if two MDAs try to deliver messages at the same time?
- What if the MDA crashes partway through delivery?
- What if the message contains a line that begins with From?
- What if the message does not end with a blank line?
- Etc.
qmail will deliver in this format anyway, but it's not reliable