Hi Victor, Perfect, thanks a lot! This is the information I was looking for.
Durk > On Thu, Nov 13, 2008 at 10:36:10PM +0100, Durk Strooisma wrote: > >> I was examining my Postfix logs and saw two sequential sessions using >> the same queue ID. I was a bit surprised as I had the assumption that >> queue IDs were generated randomly, which means they should be >> practically unique. > > They are not random, which makes unique within: > > - The 1 second interval when the queue id is created, provided your > clock does not jump backwards > - The lifetime of the message that has that queue id > > When a new second stards, and the old message is gone, the queue id is > available for re-use. > >> Okay, so this could be a wrong assumption... My question is, how are >> queue IDs exactly generated? I couldn't find this info in the Postfix >> documentation, but I might have overlooked it. > > They are generated to avoid *collisions* of queue files names for > messages that exist at the same time, but not otherwise intended to be > unique beyond the two conditions above.
