sendmail+iptables

eranb2 · 01-14-2005, 03:38 PM

Hi

sendmail is working and thundbird configured with it and working.
when I start iptables :
output policy is accept.
when I enter
iptables -A INPUT -s 127.0.0.1 -j ACCEPT
its not working .
my logic says that only OUTPUT chain should matter for sendmail
because its local process(sendmail)>output>eth0
maybe thundbird is the input of sendmail?
how is it working?
why input matters?

Eran

Travers · 01-14-2005, 08:59 PM

Well unless you set your output policy to drop, or whatever, you should not have to append the tables to accept 127.0.0.1. But since you most likely changed the input policy to drop, so it works as a firewall, iptables -A INPUT -s 127.0.0.1 -j ACCEPT, is very necessary.

eranb2 · 01-16-2005, 02:53 AM

Hi

thanks for replying

its working , still I dnt understand why?
why its input and not output?
sendmail is sending out ,not receiving.

Eran

flipcode · 01-16-2005, 04:14 AM

I believe that sendmail must be able to communicate on the localhost.