RE: How to block sending mail from local network.

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> I tried a command:
> $IPTABLES -A OUTPUT -p TCP -i $LAN_IFACE -s $LAN_IP_RANGE --dport smtp
> -j DROP
> but it did nothing.
You want the FORWARD chain.  INPUT/OUPUT only apply to the linux box itself.
See the HOWTOs for more information.



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