On 8/1/2018 12:35 PM, daniel_1983--- via Shorewall-users wrote:
> Hello list,
> 
> Shorewall is installed on my mail server. Its policy is to ACCEPT all traffic 
> from $fw to net (same interface). Since the only thing I changed in the 
> configuration is the policy file, I will paste the policy file that it 
> working (mail is sent), and the policy file that is not working (mail is not 
> sent).
> 
> 
> NON-WORKING POLICY
> 
> root@messagerie[10.10.10.19] ~ # cat /etc/shorewall/policy
> [...]
> $FW     net     ACCEPT
> net     $FW     DROP    INFO
> root@messagerie[10.10.10.19] ~ #
> 
> 

If you have the policy 'net $FW DROP' you will need to open those
required ports in '/etc/shorewall/rules'.:

net $FW tcp 25

> shorewall dump after doing a shorewall reset then trying to send mail to host 
> 192.162.70.68 : https://clbin.com/yO9h3. You can see that the connexion isn't 
> even listed.
> 
> 
> 
> 
> 
> 
> WORKING POLICY
> 
> root@messagerie[10.10.10.19] ~ # cat /etc/shorewall/policy
> [...]
> $FW     net     ACCEPT
> net     $FW     ACCEPT
> root@messagerie[10.10.10.19] ~ #
> 

'net $FW ACCEPT' means that all traffic is 'ACCEPT'ed on the firewall
from the net zone.

-Matt
-- 
Matt Darfeuille

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