Re: Scope of SMTP Verify

"Peter J. Holzer" <[email protected]> wrote:
> > Your MUA shouldn't be using SMTP to talk to my MTA.
> 
> It isn't. In fact I don't know any MUA which sends mail directly to the
> recipient's MX. That doesn't mean none exist, but they are pretty rare.
> So this seems to be a bit of a red herring.

  Or a failure of terminology.

> The more common case is that someone sets up an MTA on a PC and does not
> configure it to relay through their ISP's smarthost. That doesn't make
> the MTA a MUA. Also worms, spambots, etc. are not MUAs (they don't
> interact with a user).

  Which are the cases I was concerned about.  If your MUA sends mail
to an MTA running on the same machine, and that MTA sends it to my
MTA, it's pretty much the same thing as your MUA sending it directly.

  Either way, your MUA & MTA are under the same administrative domain
(you), and neither will accept mail back from me, it has to go through
the domains MX, first.

  Alan DeKok.