# Para o Outlook funcionar (DNS)
iptables -A FORWARD -p udp -s 192.168.0.0/24 -d 200.204.0.10 --dport 53 -j ACCEPT
iptables -A FORWARD -p udp -s 192.168.0.0/24 -d 200.204.0.138 --dport 53 -j ACCEPT
iptables -A FORWARD -p udp -s 200.204.0.10 --sport 53 -d 192.168.0.0/24 -j ACCEPT
iptables -A FORWARD -p udp -s 200.204.0.138 --sport 53 -d 192.168.0.0/24 -j ACCEPT
# Liberando as portas do Oulook para acessar os servidores externos
iptables -A FORWARD -p tcp -s 192.168.0.0/24 --dport 25 -j ACCEPT
iptables -A FORWARD -p tcp -s 192.168.0.0/24 --dport 110 -j ACCEPT
iptables -A FORWARD -p tcp --sport 25 -j ACCEPT
iptables -A FORWARD -p tcp --sport 110 -j ACCEPT