Hello,
can a postfix guru please look over my easy configuration? I wanted to create
some very easy antispam defense using only postfix (postgrey).
I created a new smtpd_restriction_classes, which i appended to
smtpd_recipient_restrictions.
my_filtering = check_recipient_access
proxy:pgsql:/etc/myconfig/recipient_check, check_policy_service
inet:127.0.0.1:60000, check_client_access pcre:/etc/myconfig/rbl_check
At first i check if the internal recipient exists with a SQL lookup, it either
returns REJECT if the user isnt found, or DUNNO if the user is found (to
proceed with additional checks). I heard the use of proxy: is recommended for
performance reason - i want to use this lookup for up to 50 messages/sec - is
proxymap the right thing todo in this case?
After the recipient check, i check for greylisting, default config of postgrey.
Finally im doing an rbl check with reject_rbl_client zen.spamhaus.org.
Is this the correct order? Is this performance wise the best i could do?
Thank you
