Sender Authentication Checks Up, Varies Among ISPs
     

<p class="lede_quote">"The biggest challenge is that spam evolves and spam changes at an ever-increasing rate"</p> <p> Deliverability rates for permission-based e-mail average 75 percent in the U.S., though some ISPs do a better job routing messages to the inbox than others. <a target="_blank" href="http://www.topix.net/r/07lUe3DDGoDdEToce6O4L2UFGoVyo5dQtWikCVbSI51ciU2eixf9wPx38Zm=2Be7s7vWpGOxWh4gZ9U=2FeJGWafYUQ=3D=3D" title="www.clickz.com" class="readmore_link">via Clickz[/url] </p>
     

http://www.topix.net/news/spam/2007/09/sender-authentication-checks-up-varies-among-isps?fromrss=1