Postfix GeoIP Based Rejections
If you intend to be able to reject connections from remote IP addresses if they’re from certain countries. This is how you do it. This method will reject ip address that has been mapped in GeoIP at smtp conversation stage. However, This tutorial has never been tested. nothing more than a prototype that i created in leisure time.
Software required:
- postfix (tcp_table)
- Perl
- Perl Geo::IP module
main.cf:
127.0.0.1:2528_time_limit = 3600s smtpd_client_restrictions = check_client_access tcp:[127.0.0.1]:2528
master.cf
127.0.0.1:2528 inet n n n - 0 spawn user=nobody argv=/etc/postfix/geo-reject.pl
