[Exim] allow relay from hosts contained in a file of subnets…

Hi,

I'm trying to setup my Exim server to allow relaying from a large list of
subnets stored in a text file. Sorry - i've check through the FAQa and
this list and can't get it going.. The file contains lines like:

192.168.1.0/24
192.168.10.0/24
192.168.30.0/24
10.9.8.8/32

I've tried the following hostlist lines but they only seem to work if I
specify the actual IP, not the IPs with subnets

hostlist relay_from_hosts = localhost : @mx_any :
lsearch;/etc/mail/relay_hosts
(OR) hostlist relay_from_hosts = localhost : @mx_any :
net-lsearch;/etc/mail/relay_hosts

Can anyone help?

Thanks,
Andrew

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