Outlook has its own filtering in place besides filtering on your mail server or a 3rd party filtering service. This may interfere with your mail flow, so here are some instructions on disabiling that feature:
1) Open Outlook
2) Click Actions > Junk E-mail >Junk E-mail Options
3) Select No automatic filtering;
4) Press OK.
Thank you,
WendyUpdate: As of Feb, 5th 2009 the MxToolBox Forums have moved to http://community.mxtoolbox.com/forums
Wendy
Tier 2 Support Analyst
support@mxtoolbox.com