When I see this behaviour from a mature microsoft product I wonder if there is not a degree of internal sabotage, such is the appearence of this foot shooting:
Delivery to the following recipient failed permanently:
Technical details of permanent failure:
PERM_FAILURE: SMTP Error (state 12): 550 SC-001 Mail rejected by Windows Live Hotmail for policy reasons. Reasons for rejection may be related to content with spam-like characteristics or IP/domain reputation problems. If you are not an email/network admin please contact your E-mail/Internet Service Provider for help. Email/network admins, please visit http://postmaster.live.com for email delivery information and support
You’d have thought at least they’d have the decency to place me in the recipient’s spam folder and let them decide?