Stefan F?rster: > Given no external interference, are queue IDs unique within a single > instance for the whole span a message stays within qmgr's control, or > can a mail in e.g. the deferred queue, share an ID with a message in > the active queue?
Postfix queue IDs are used as message file names.
Postfix moves messages between incoming, active and deferred queue.
Having multiple messsage files with the same name would result in
loss of mail.
Wietse
