There have been a couple of requests for the cidr file I'm using to block spam in postfix. This only works if you know you'll likley never recieve mail from outside the US (or you don't want to). Further, it only works for fairly low traffic mail servers. If you really want to use it for a high traffic site, change the 451s to REJECTs. If you have a lot of users or recieve mail from outside the US often you won't want to use this approach.
This is the real file I use, so it will be updated over time. You could wget it in a cron every 2-3 months for example. If you have any updates to it - please send them along. Also, this list may be out of date. Any corrections/removals would be very welcome. http://ryansimpkins.com/cidr In main.cf, add this: smtpd_client_restrictions = cidr:/etc/postfix/cidr Don't forget to run postmap /etc/postfix/cidr. -Ryan /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
