
Spam control and virus protection <A HREF="http://searchcio.techtarget.com/originalContent/0,289142,sid19_gci965401,00.html">top the list of CIOs' and IT managers' concerns</A> when it comes to enterprise messaging systems. After spam and viruses, the survey found that compliance regulations, Microsoft's pricing policies and denial of service (DoS) attacks round out the top five messaging concerns that keep CIOs up at night.