Milter-greylist

On Mon, Jul 13, 2009 at 10:12:12AM -0700, Rick Knight wrote:
> Yes, the firewall is between the mail server and the internet and does 
> port forwarding. Looks just like you've illustrated.
> 
> I did change my firewall. I had been using a Slackware box with IPTables 
> in the same setup, Internet -> Firewall -> SMTP Server and port 
> forwarding. Milter-greylist was working fine. Now I'm using a router 
> with a NAT and SPI firewall (linux OS). I didn't connect the greylist 
> problem with the firewall change. I guess this could be the problem. If 
> so, is there a way around it?
That's definitely your problem.
You should change your firewall config to do really not and not port forwarding.
eg. it has to keep the source address and change only the destination address
of the packets passing thru the firewall to the mail server.
Currently it changes to the source address to the one of the firewall.

-- 
Ralf 'Snake' Gebhart