I have the following in my iptables: -A RH-Firewall-1-INPUT -i lo -j ACCEPT -A RH-Firewall-1-INPUT -p icmp -m icmp -m limit --icmp-type echo-request --limit 2/second -j ACCEPT -A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT # SSH -A RH-Firewall-1-INPUT -p tcp -m tcp --dport 22 -j ACCEPT # Mail -A RH-Firewall-1-INPUT -p tcp -m tcp --dport 25 -j ACCEPT -A RH-Firewall-1-INPUT -p tcp -m tcp -m multiport -j ACCEPT --dports 21,80,6969 # DNS -A RH-Firewall-1-INPUT -p tcp -m tcp -s 209.25.194.144/255.255.255.240 -d 209.25.194.144/255.255.255.240 --dpor t 53 -j ACCEPT # SideKick Chat Server -A RH-Firewall-1-INPUT -p tcp -m tcp --dport 2224:2225 -j ACCEPT # SideKick Streaming Server -A RH-Firewall-1-INPUT -p tcp -m tcp -m multiport -j ACCEPT --dports 8009,8080 # Pings -A OUTPUT -p icmp -m icmp -m limit --icmp-type echo-reply --limit 2/second -j ACCEPT # Outbound FTP and Mail -A OUTPUT -p tcp -m tcp -m multiport -j ACCEPT --sports 20,25 # SideKick Chat Server -A OUTPUT -p tcp -m tcp --sport 2224:2225 -j ACCEPT -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited # SideKick Streaming Server -A OUTPUT -p tcp -m tcp -m multiport -j ACCEPT --sports 8009,8080 COMMIT Unfortunately, for what ever reason, I get no response when I try to telnet to port 25. Do I miss some port somewhere when I was setting this up? Thanks eric