FYI: Those of you who are using the Postfix MTA with UCE prevention
configuration, please notice that e.g. the ORBL.org recently has closed
its doors and that a few others are also no longer available. I've
reinvestigated which RBLs are still available _AND_ provide a reasonable
and reliable resource. The result of my currently resulting _PERSONAL_
Postfix client restrictions are now:
smtpd_client_restrictions =
permit_mynetworks,
check_client_access hash:/PREFIX/etc/postfix/access,
reject_unknown_client,
reject_unauth_destination,
reject_rbl_client dnsbl.sorbs.net,
reject_rbl_client list.dsbl.org,
reject_rbl_client bl.spamcop.net,
reject_rbl_client sbl.spamhaus.org,
reject_rbl_client pbl.spamhaus.org,
reject_rbl_client xbl.spamhaus.org,
check_policy_service unix:/PREFIX/var/postgrey/postgrey.socket,
permit
If you are not running both the "postfix" and "postgrey" packages, just
drop the "check_policy_service ..." line above. Everything else allows
you to dramatically drop down the spam flood. The most effective IMHO
are "reject_unknown_client", the three "spamhaus.org" RBLs and the
greylisting via "postgrey".
Ralf S. Engelschall
[EMAIL PROTECTED]
www.engelschall.com
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