Hi, I want to block all incoming mail from the libero.it domain. I have NATed mail server. I set the following rules in my firewall, But still I am getting mails from this domain. Can you please help on this.? #libero.it - 195.210.91.83 SIP=195.210.91.83 $IPT -A INPUT -s $SIP -j LOG --log-prefix="spam: " $IPT -A INPUT -s $SIP -j DROP $IPT -A INPUT -s $SIP -j LOG --log-prefix="spam: " $IPT -A FORWARD -s $SIP -j DROP [root@gw root]# dig libero.it ; <<>> DiG 9.2.0 <<>> libero.it ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 8861 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0 ;; QUESTION SECTION: ;libero.it. IN A ;; ANSWER SECTION: libero.it. 86169 IN A 195.210.91.83 ;; AUTHORITY SECTION: libero.it. 86169 IN NS ns2.libero.it. libero.it. 86169 IN NS ns1.libero.it. ;; Query time: 4 msec ;; SERVER: 192.168.1.1#53(192.168.1.1) ;; WHEN: Mon Oct 28 09:00:45 2002 ;; MSG SIZE rcvd: 79 -SR