--On Tuesday, August 13, 2002 19:45:07 -0400 Keith Moore
<moore(_at_)cs(_dot_)utk(_dot_)edu>
wrote:
I'm doing this now for one user community, with mixed results. In
particular, I'm surprised at the number of users whose email addresses
are valid (in that if you send them mail, it will get there eventually),
but for whom attempts to validate their addresses via SMTP fairly
consistently fail for temporary reasons (e.g. DNS timeout, SMTP doesn't
respond, SMTP returns 4xx).
to this reader the above strongly suggests that we ought not to mess with
the "try-really-hard" principle of SMTP, just because some small amount of
spam reduction can be had by making delivery "brittler" or subject to more
conditions having been met.
--
Måns Nilsson http://vvv.besserwisser.org