On Wed, 11 Aug 2010, Steve Atkins wrote: > > Spam filtering appliances and services sometimes run as, effectively, > proxies rather than store-and-forward MTAs. Postini works in this > way, I think, as do some of the enterprise filtering appliances that > people protect their Exchange servers with.
GNU SAUCE works this way and dates from 1997 so the approach isn't that new :-) A key difference is that they never have to fan-out deliveries and they have operational control over the destination, so deployments should be able to keep a fair grip on delays. Tony. -- f.anthony.n.finch <[email protected]> http://dotat.at/ FISHER: SOUTHWEST 3 OR 4, BACKING EAST 4 OR 5. SLIGHT. SHOWERS. GOOD.
