On 10/05/2006 09:00, Gareth Hastings wrote: > I think this would be a bad test also. Often people who use smart hosts
> or have outsourced spam/AV management tend to restrict access to their
> mail servers to only the relevant hosts (i.e. upstream relays etc)
...and many ISPs (and other large organisations) have farms of outbound
smarthosts which only permit connections from their "inside" interfaces
(term used very loosely). The corresponding inbound servers are
frequently completely different devices.
