intermediate smtp servers

[Steve Friedl]

On Wed, Jul 21, 2004 at 09:06:33AM -0700, lili wrote:
> b) an intermediate smtp server that will continue transferring the
> message to the destination smtp server

Yes, (b) happens quite a lot these days: people are increasingly deploying
front-end mailservers that do spam/virus processing (perhaps in the DMZ)
before forwarding to the "real" mailserver internally, and that "real"
mailserver is not visible or reachable from the outside.

Steve

-- 
Stephen J Friedl | Security Consultant |  UNIX Wizard  |   +1 714 544-6561
www.unixwiz.net  | Tustin, Calif. USA  | Microsoft MVP | steve at unixwiz.net