It's best to use DNSBL /(DNS Block Lists)/ for this, because then you
don't need to update these yourself: e.g. that particular IP address is
already listed on all three block lists at uceprotect.net. These work
in the same way as a DNS reverse look-up but instead of returning a
domain name, the result is a value depending on whether or not that
particular DNSBL is listing the originating IP address as a suspected
source of spam.
Use the following in your exim.conf, in the acl_check_rcpt section:
deny message = GOODBYE!!! $sender_host_address is in a black
list at $dnslist_domain\n$dnslist_text
dnslists = dnsbl-1.uceprotect.net : dnsbl-2.uceprotect.net
: dnsbl-3.uceprotect.net
I also use other DNSBLs, just add the ones you want to use to the
dnslists entry.
On 06/06/2022 23:18, The Doctor via Exim-users wrote:
Just going over my spam and I find this IP 195.133.39.99
sending a lot of junk. How can you block such a class C?
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