Microsoft, AOL Resume Anti-Spam Effort America Online Inc. said Monday it is once again supporting a Microsoft Corp. plan to combat unwanted bulk e-mail by verifying senders of messages, a move that could rekindle industry adoption of a new system for attacking spam. &lt;BR&gt;&lt;FONT face="verdana,MS Sans Serif,arial,helvetica" size="-2"\ color="#666666"&gt;&lt;B&gt;-The Washington Post&lt;/B&gt;&lt;/FONT&gt;