Hmm ok. I was also thinking I might use Postfix's body checks and just drop the domains in there as well, as I'm guessing there's not much difference in performance between either test.
Also, what about simply adding the entries to the /etc/hosts file on the mailserver? Wouldn't that have the same effect as adding it to the local DNS?
Jeff Chan wrote:
Hi Jeff, You can create and serve a list for your local use simply by creating a zone file with a syntax like the existing SURBLs, but with your own zone name and "host names" where the host names are the domains (and IPs) to block on:
$TTL 28800 @ IN SOA YOUR_ORIGIN. YOUR_CONTACT. ( 1087415057 600 300 604800 28800 )
@ IN NS YOUR_NAMESERVERS_HERE.
YOUR_DOMAIN_TO_BLOCK IN A 127.0.0.2 IN TXT "YOUR TEXT MESSAGE HERE." REVERSED_IP_ADDRESS_TO_BLOCK IN A 127.0.0.2 IN TXT "YOUR TEXT MESSAGE HERE." [...]
Then serve the zone on your local name server and use the name of your own zone in your SA SURBL rules.
Jeff C.
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