Research in Motion (RIM) has released a new version of its BlackBerry Enterprise Server for Microsoft Exchange to fix a series of security vulnerabilities. Internet.com says that the BlackBerry Enterprise Server is a <A HREF="http://boston.internet.com/news/article.php/3073121">crucial part of RIM's push</A> into the enterprise PDA market. The Enterprise Server lets IT departments connect Microsoft Exchange or Lotus Notes/Domino servers to a wireless carrier to allow for corporate email delivery.