Mails going to junk folder in outlook 2007 ? Try this

Also make sure that your outlook 2007 is up to date, there were problems in the initial release.
A Dedicated Room for Testing, Experimenting, Listing & Discussing Internet Marketing Innovation
http://www.wyselabs.com/marketinglab/
http://www.wyselabs.com/marketinglab/viewtopic.php?f=8&t=665