[Mimedefang] Validating Exchange addresses

[David F. Skoll]

On Sun, 12 Oct 2003, Justin wrote:

> Querying my Exchange 5.5 box, this misses all of the hidden recipients in
> the organization. Which I suspect is to be expected, but should be a noted
> caveat.

I'm going to have to set this up for a customer, so could you explain
to me what a "hidden recipient" is?

Thanks,

David.