On 03/08/11 11:26, Oliver Howe wrote:
Hi,
Is it possible to give some hosts a higher priority when relaying messages?
As I am relaying for several different hosts (companies) and some of them
have different expectations than others.
ie some have time sensitive emails and some arent so bothered about their
messages being delivered immediately.
The best way would be to put them on different servers, but that is not
economical at the moment.
Thanks,
Oliver
If I've understood you correctly, and you're acting as a smarthost to
relay outbound mail for these companies:
If you know the source addresses in advance of at least one of the
high/low priority groups, then you could use smtp_accept_queue with a
conditional on the received_ip_address:
e.g.:
smtp_accept_queue = ${if eq{$received_ip_address}{10.0.0.1}{0}{5}}
to allow 10.0.0.1 to relay limited only by smtp_accept_max, but to queue
mail from anywhere else if are more than 5 connections.
If you also relay inbound mail, then queue_domains could be used to
defer delivery for non-priority domains; they would then be subject to
the queue runner load settings, while 'premium' domains would be
delivered straight away if possible.
See http://www.exim.org/exim-html-current/doc/html/spec_html/ch14.html
for the details of these options.
Dominic
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