first off, the rules in FORWARD with -j ACCEPT r redundant, since the policy is ACCEPT. can't see anything wrong with ur ruleset vis-a-vis outgoing sendmail requests. try adding "iptables -I INPUT -p tcp --dport 113 -j ACCEPT" On Tue, 2004-02-17 at 23:20, Corey Furman wrote: > When I enabled these rules, but then sendmail (on the same box) started > timing out talking to other mail servers. Does anyone see why? > > > # Generated by iptables-save v1.2.7a on Thu Aug 21 14:04:36 2003 > *nat > :PREROUTING ACCEPT [119808:12963417] > :POSTROUTING ACCEPT [20799:1127196] > :OUTPUT ACCEPT [28268:1649529] > -A POSTROUTING -o eth0 -j MASQUERADE > COMMIT > # Completed on Thu Aug 21 14:04:36 2003 > # Generated by iptables-save v1.2.7a on Thu Aug 21 14:04:36 2003 > *mangle > :PREROUTING ACCEPT [4394291:2746107050] > :INPUT ACCEPT [629207:295924271] > :FORWARD ACCEPT [3748994:2446728158] > :OUTPUT ACCEPT [700510:360090297] > :POSTROUTING ACCEPT [4450703:2807075249] > COMMIT > # Completed on Thu Aug 21 14:04:36 2003 > # Generated by iptables-save v1.2.7a on Thu Aug 21 14:04:36 2003 > *filter > :INPUT ACCEPT [629180:295921855] > :FORWARD ACCEPT [3748994:2446728158] > :OUTPUT ACCEPT [700509:360090229] > -A INPUT -i eth0 -p tcp -m tcp --dport 11001:65535 -j REJECT --reject-with > icmp-port-unreachable > -A INPUT -i eth0 -p tcp -m tcp --dport 199 -j REJECT --reject-with > icmp-port-unreachable > -A INPUT -i eth0 -p tcp -m tcp --dport 111 -j REJECT --reject-with > icmp-port-unreachable > -A INPUT -i eth0 -p tcp -m tcp --dport 3306 -j REJECT --reject-with > icmp-port-unreachable > -A INPUT -i eth0 -p udp -m udp --dport 135:139 -j REJECT --reject-with > icmp-port-unreachable > -A INPUT -i eth0 -p tcp -m tcp --dport 135:139 -j REJECT --reject-with > icmp-port-unreachable > -A FORWARD -i eth0 -m state --state INVALID,NEW -j REJECT --reject-with > icmp-port-unreachable > -A FORWARD -p 47 -m state --state NEW -i eth1 -o eth0 -j ACCEPT > -A FORWARD -p tcp -m state --state NEW --dport 1723 -i eth1 -o eth0 -j ACCEPT > -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT > COMMIT > # Completed on Thu Aug 21 14:04:36 2003 > > > Thanks, > Corey S. Furman > Network Administrator > > Telephone: Email: > Work: 1.800.233.7177 Documents: furmanc@xxxxxxxxxxxxxxxx > Cell: 1.570.809.2449 Instant: CoreyFurman@xxxxxxxxxxx > _________________________________________________ > Warning! Sending me an attachment of these types: > .bat .com .exe .htm .html > .hta .lnk .url .pif .scr > .shs .vbs .vbe .wsf .wsh > will send your email to the trash, unread! > >