On Tuesday 04 June 2002 11:18 pm, Michael Hudin wrote: > I can send SMTP out just fine, but no other server can send it in for some > reason.
> -A POSTROUTING -o eth0 -j SNAT --to-source 10.10.10.254 > -A POSTROUTING -o eth1 -j SNAT --to-source 10.10.10.254 I really don't like the look of those two rules together. You're saying that any packet going out of the external interface should bear the source address of the external interface - pretty standard. But you're also saying that any packet going out of the *internal* interface should also have the source address of the external interface - why ??? Do you have any access control rules on your SMTP server - is it fussy about the IP addresses it accepts connections from ? What happens if you telnet to port 25 on the mail server from your firewall ? Antony.
