pop3 and dns

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Greetings!
I have been looking for the answer to this through google...

How do I allow POP3 through my iptables rules?

I have done this...
$IPTABLES -A FORWARD -p tcp --dport 53 -j ACCEPT
$IPTABLES -A FORWARD -p udp --dport 53 -j ACCEPT

$IPTABLES -A FORWARD -p tcp --dport 110 -j ACCEPT

I included the dns forward rule to allow the internal clients to be able to resolve pop3 domain names. 

The problems:
1) They still can't resolve domain names.
2) POP3 can't seem to pass through going outside from the internal clients.

Please advise me to what I still need to add. Thanks.

Cheers,

fritz <www.mesedilla.com>
---
+ Basta Ikaw Lord



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