--- Luciano Rocha <strange@xxxxxxxxxxxxx> wrote:
> On Mon, Jun 18, 2007 at 11:46:42AM +0100, first last wrote:
> > Hi,
> >
> > I am trying to set up a firewall rule so calls to old_mailserver:25
> get
> > redirected to localhost:25. I have seen quite a few rules and none
> seem
> > to work.
> >
> > I have tried with the firewall enabled (configured to allow smtp)
> and
> > disabled, but it doesn't seem to make a difference.
> >
> > One of the commands I have been using is:
> > /sbin/iptables -t nat -I PREROUTING -p tcp -d old_mailserver_ip/32
> > --dport 25 -j REDIRECT --to 127.0.0.1:25
>
> Try this:
> iptables -t nat -I PREROUTING -p tcp -d old_mail_server_ip --dport 25
> \
> -j REDIRECT
> iptables -t nat -I OUTPUT -p tcp -d old_mail_server_ip --dport 25 \
> -j REDIRECT
Thanks, this worked! This just saved me a reboot on the production
servers :)
Thanks to all who responded.
Gabriel
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