MASQUERADE & OUTLOOK

Privet vsem.
Postavil server s masqueradingom dlia klientov windows:
echo "1" > /proc/sys/net/ipv4/ip_forward
/sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE.
No kogda pitaius' otoslat' s klienta mail 4erez outlook - pis'mo ne uhodit.
Ne podskagite, kak mogno re6it' etu problemku?
Zaranee blagodaren.