Roy Badami <roy(_at_)gnomon(_dot_)org(_dot_)uk> wrote:
The problem is that when users are working from home or travelling and
(say) using facilities in a hotel, they may be in the habit of simply
pointing their SMTP client at the SMTP server of their home or hotel
ISP and sending mail that way. As soon as the organization publishes
MARID records, such mail will start bouncing if the recipient does
MARID checks.
How can the recipient distinguish such mail from forged spam?
And even ignoring that, what percentage of roaming users behave in
such a way?
Alan DeKok.