Hello I blocked a subnet by using the following command: iptables -A INPUT -s 222.0.0.0/8 -j DROP I then saved it to file iptables-save > /etc/sysconfig/iptables and did an iptables -L INPUT to verify that it is in DROP all -- 222.0.0.0/8 anywhere However, i am still receiving SPAM from IPs within that subnet (and others) long after I thought I completely blocked them from connecting to my server. I am using RedHat 9 with sendmail, no outgoing SMTP allowed. Does anyone have any feedback on this? Thank you
