Curtis:
> > Companies that provide out-sourced email filtering service often
> > don't have up-to-date recipient lists. Instead they verify addresses
> > in real-time. ?The Postfix implementation of this is described in
> > http://www.postfix.org/ADDRESS_VERIFICATION_README.html. ?It supports
> > routing overrides, positive caching and negative caching.
>
> Yeah, I looked at that option too... but the part about getting black
> listed didn't sound too appealing. ?(Some clients will be able to
> whitelist our server's IP, but we expect that a few of our clients
> will be on shared hosts were they will have little to no control of
> such things.)
Blacklisted by whom? By your own customer? That would be stupid.
Wietse
