I think what you're looking for is in the qmail-log manpage.
--
/* Derek Callaway <[EMAIL PROTECTED]>
Programmer; CE Net, Inc.
(302) 854-5440 Ext. 206 */
On Sun, 12 Dec 1999, Warren J. Beckett wrote:
> Hi all..
>
> I have hopefully a simple question.
>
> How is the message number in the qmail logs generated? I thought this number
> would have been semi unique, but I have seen many messages with the same
> number from and to many different people.
>
> I hope I have not missed something stupid.
>
> Much thanks
>
> Warren.
>