Re: [exim] Round-robin dnslists?

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Autor: Mike Cardwell
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Dla: Exim users
Temat: Re: [exim] Round-robin dnslists?
John Horne wrote:

> Anyone know if it is possible to configure the 'dnslists' condition in a
> round-robin order? I want to check to see if a sending host is listed on
> one of two RBL's, but don't necessarily want all the checks to go to the
> first listed RBL:
>
>        dnslists = rbl-a : rbl-b

>
> I would rather it alternated between the two, rather than testing
> 'rbl-a' all the time. Similar to the 'hosts_randomize' transport
> statement.


dnslists = ${if eq{${eval:$tod_epoch%2}}{1}{rbl-a:rbl-b}{rbl-b:rbl-a}}

In the above example, the order depends on whether or not the number of
seconds since the epoch is odd or even. Would that be sufficient?

--
Mike Cardwell - IT Consultant and LAMP developer
Cardwell IT Ltd. (UK Reg'd Company #06920226) http://cardwellit.com/