Zone Configuration to Redirect SMTP

[Laurent CARON]

On Fri, Apr 11, 2008 at 04:33:20PM +0200, I/P/B/ Ertan Gönülal wrote:
> Hi all,
> 
> i have a problem witch a Zone configuration
> 
> I have a zone for vlan and a Debian Vserver with exim4
> 
> The vserver has an internal IP 172.16.xx.xx
> 
> The Mainsystem where the vserver runs has an IP 192.xxx.xxx
> When i write the Rule:
> 
> REDIRECT_SMTP="tcp smtp 0.0.0.0/0=>192.xxx.xxx.xxx/32 172.16.xxx.xxx smtp"
> 
> I become the Error:
> 
> iptables -t nat -A PREROUTING_NAT_ZONENAME -p tcp --dport smtp -d
> 192.xxx.xxx.xxx/32 -j DNAT --to-destination 172.16.xxx.xxx:25 465
> 
> The Port 465 is for SSMTP but i dont want to use this.
> 
> If i change the rule and give the Port 25 and not the name smtp anything
> work correctly.
> 
> REDIRECT_SMTP="tcp 25 0.0.0.0/0=>192.xxx.xxx.xxx/32 172.16.xxx.xxx 25"
> 
> The /etc/services includes the correct description:
> 
> smtp            25/tcp          mail
> 
> I can use it (smtp) in any other zones but in this, it fails.


Hi,

did you try:

REDIRECT_SMTP="tcp smtp 0.0.0.0/0=>192.xxx.xxx.xxx/32 172.16.xxx.xxx"
or
REDIRECT_MAIL="tcp mail 0.0.0.0/0=>192.xxx.xxx.xxx/32 172.16.xxx.xxx"


Can't you be more specific on the source of packets instead of any
(0.0.0.0/0) ?

Laurent