Victor Duchovni: > On Wed, Mar 31, 2010 at 08:16:28AM +1300, Mike Hutchinson wrote: > > > > What version of Postfix is this? > > > > Postfix mail_version = 2.5.1 > > The rate control features introduced in 2.5.0 were improved in later > patches, you must upgrade to the latest 2.5 release if you want to > enforce inter-message delays.
According to the change log: 20090305 Bugfix: in the "new queue manager", the _destination_rate_delay code needed to postpone the job scheduler updates after delivery completion, otherwise the scheduler could loop on blocked jobs. Victor & Wietse. File: qmgr/qmgr_entry.c, qmgr/qmgr_queue.c, qmgr/qmgr_job.c. This fix was released with Postfix 2.5 Patch 07. Wietse