punit jain:
> > Don't look under the hood unless you know what you are looking at.
>
> I agree with you Viktor but i am just trying to get a clear picture of
> postfix as a novice.
>
> What my concern is what will happen after setting fast_flush_domains to
> relay domains and flushing the queue say at the time when the remote
> domain mentioned in fast_flush_domain is slow ?
It will not make any difference at all.
Files in the flush directory are used for "postqueue -s domain" or
"sendmail -qR domain".
> Will preemption of messages take place or will it effect the delivery
> process ?
None of the above.
Do not list local destinations in fast_flush_domains. In fact, it
is a good idea not to change parameters until you have been using
Postfix for a considerable time.
Wietse