If your email does not have a Sender ID, <A HREF="http://news.zdnet.com/2100-1009_22-5758365.html?tag=nl.e539">Microsoft wants to junk your message.</A> Sometime around November, Hotmail and MSN will flag as potential spam those messages that do not have the tag to verify the sender, Craig Spiezle, a director in the technology care and safety group at the software maker said Wednesday. The move is meant to spur adoption of Sender ID, he said.