David Fokkema wrote:
... Why is there something like a smart host?
I was forced to use my ISPs MTA as smart host after I got rejects from some SMTP daemons somewhere on the net because my current dial-in IP address was not registered as Mail Exchange (MX) for the domain in the DNS. I don't know if this is standard conformant behavior, but it might slightly improve the SPAM situation. Regards Ingo