IPTable interfering with email.

[Andrew Harris]

What do the bounce messages say?


On Fri, Mar 29, 2013 at 4:12 PM, keith smith <klsmith2020 at yahoo.com> wrote:

>
> Hi,
>
> I am puzzled.
>
> I cannot receive or send email when I have IP table on, except to
> Yahoo.com.  I get bounded emails when trying to send.
>
> As soon as I stop IPTables I start receiving emails.
>
> CentOS 6.4, Postfix, dovcott, Spamassassin, virtual host server running on
> my business cox account (no blocked ports).
>
> Router ports that are open 21,22,25,53,80,143,443,587. (port forwarding)
>
> IPTable config:
>
> # Generated by iptables-save v1.4.7 on Fri Mar 29 14:08:56 2013
> *filter
> :INPUT DROP [0:0]
> :FORWARD DROP [0:0]
> :OUTPUT ACCEPT [4:432]
> -A INPUT -s 192.168.20.0/24 -p tcp -m tcp --dport 22 -j ACCEPT
> -A INPUT -s x.x.x.x/32 -p tcp -m tcp --dport 22 -j ACCEPT
> -A INPUT -s x.x.x.x/32 -p tcp -m tcp --dport 22 -j ACCEPT
> -A INPUT -p tcp -m tcp --dport 25 -j ACCEPT
> -A INPUT -p tcp -m tcp --dport 53 -j ACCEPT
> -A INPUT -p tcp -m tcp --dport 80 -j ACCEPT
> -A INPUT -p tcp -m tcp --dport 143 -j ACCEPT
> -A INPUT -p tcp -m tcp --dport 443 -j ACCEPT
> -A INPUT -p tcp -m tcp --dport 587 -j ACCEPT
> -A INPUT -i lo -j ACCEPT
> -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
> COMMIT
> # Completed on Fri Mar 29 14:08:56 2013
>
>
> Thank you for any insight.
> Keith
>
> ------------------------
> Keith Smith
>
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