> Isn't  it  possible  to  write  a separate authentication module for
> MS-SMTP?

No, not for MS SMTP alone; believe me, we've done much research on the
subject  in  hopes  of  writing  just  that  AUTH plug-in for an IMail
database.  There are hitches in the way SMTP event sinks are processed
(in fact, one major hitch is due to an error in the MSDN docs that has
never been updated with correct info) that make them suitable for just
about anything in the envelope _but_ SMTP AUTH transactions.

It  is  indeed possible to write alternate authentication packages for
the   Windows  platform  as  a  whole,  and  these  are  comparatively
well-documented.  but  IME  this  is some of the most advanced systems
programming around, and very difficult to code safely.

It's  also  possible,  quite simply as far as the client side goes, to
use  Kerberos from MS SMTP, but on the server side this requires a KDC
capable  of  issuing  tickets  for  credentials  from either the IMail
registry  or ODBC; since the only open-source KDC (MIT) is *nix-based,
this  would  be  mean  hacking (and running) a *nix-based KDC to use a
Windows-based datasource. This is not a drop-in solution. :)

--Sandy


------------------------------------
Sanford Whiteman, Chief Technologist
Broadleaf Systems, a division of
Cypress Integrated Systems, Inc.
e-mail: [EMAIL PROTECTED]

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