I don't think that would work in the case of a SMTP session ... as the
session is usually encrypted AFTER the connection is made (using TLS, I
think). It's part of the ESMTP standard (again, I think).
This mailing list archive is Copyright 1997-2014 by MIDRANGE dot COM and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available here. If you have questions about this, please contact