On Thu, Jan 29, 2009 at 12:47:42AM -0800, Jacky Chan wrote:
>
> Hi all,
>
> I implemented slow transport with delay of 5 mins in Postfix 2.5, when my
> client send a lot of messages at a time, I notice that Postfix active queued
> queued most of this messages. A symptom occurs when one of the slow
> transport destination MX temporarly defered the current processing messages
> in the active queue, the rest of the pending messages will directly be
> deferred. Is there any default cache setting been enabled? How can I prevent
> this from happening and thus to force the rest of the messages in the active
> queue to try deliver by trying another MX hosts of that slow transport
> destination.
With Postfix 2.5:
slow_destination_concurrency_failed_cohort_limit = 0
to turn off dead-destination detection entirely. Or
slow_destination_concurrency_failed_cohort_limit = 10
to require 10 consecutive failures to declare the destination dead.
http://www.postfix.org/SCHEDULER_README.html
Warning, the above tdocument contains advanced material.
--
Viktor.
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