Hi,
Bruce can verify this with his own virtual-hosting MTA. SMTPD32 will
only check its primary virtual host--the virtual host with the same
official host name as the global SMTPD32 installation--for address
literals. That is, you can have example.com, example2.com, and
example3.com all hosted independently on the same box. If the OHN is
example.com, then user(_at_)[ip(_dot_)ad(_dot_)dr(_dot_)es] will only
perform one lookup: in
the example.com userbase. A failure does not indicate that
user(_at_)example2(_dot_)com and user(_at_)example3(_dot_)com do not exist.
Our MTA goes one further. It will only resolve to a domain if the admin has
specifically bound the IP to a domain. Otherwise it always fails.
Regards
Richard Bang
Floosietek Ltd
richard(_at_)ftgate(_dot_)com
http://www.floosietek.com