Re: [Exim] expand fallback_hosts?

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Autor: Philip Hazel
Data:  
Para: John Dalbec
CC: exim-users
Assunto: Re: [Exim] expand fallback_hosts?
On Tue, 6 Apr 2004, John Dalbec wrote:

> Is there any drawback to setting hosts_randomize on the transport? I notice
> that the default configure file doesn't do so.


Well, it depends if you want your hosts randomized or not! :-) This
isn't something that is "obvious", IMO.

> I think it's strange that you can set hosts_randomize on the "manualroute"
> router but not on the "dnslookup" router, whereas you can set "fallback_hosts"
> on both.


You can't set hosts_randomize on the dnslookup router because the MX
values determine the order of the (main) hosts, and this should not be
messed with.

I think it would be confusing to allow hosts_randomize on a dnslookup
router, even if it only applied to fallback_hosts. People don't read
manuals... With hindsight, maybe I should have gone for
fallback_hosts_randomize, but I think it's too late now.


--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.
Get the Exim 4 book:    http://www.uit.co.uk/exim-book