Jeroen Geilman:
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> On 2/3/11 8:31 PM, Joe wrote:
> > On 02/03/2011 11:24 AM, James R. Marcus wrote:
> >> Hi,
> >> I have been reading about prioritizing mail in Postfix on this list.
> >> It seems that the answer is, there is a shared queue and mail is not
> >> prioritized. I want to make sure that I fully understand if this
> >> applies to my situation.
> >>
> >> All of our servers that send mail go through our Postfix gateways. I
> >> don't want to manage our exchange server as a relay.
> >>
> >> I find that when we send out a lot of email and there is mail queued,
> >> internal mail is delayed. I'm assuming the short term solution to
> >> this is:
> >>
> >> postqueue -s domain.com
> >>
> >> Is there another way to prioritize internal mail delivery based on
> >> domain?
> >>
> >> Postfix-2.3.3-2.1.el5_2 running on CentOS 5.5 x64
> >
> > One huge improvement you can make is to specify the "relay" transport
> > for incoming mail.
>
> To achieve what ?
Postfix has separate "smtp" and "relay" transports for a good
reason.
The scheduler uses round-robin destination selection. This improves
fairness in the general case, but it bites when you have lots of
mail going to one place, typically, from internet to inside mailhost.
In that case it is better to separate inbound (relay) mail from
outbound (smtp) mail, otherwise inbound deliveries suffer from
competition by outbound deliveries.
Wietse
