Mervin,
Are you getting any bouncebacks? Can you either send one to support@mxtoolbox.com or post it here? The content of such will help diagnose the problem.
Thanks,
Peter
Update: As of Feb, 5th 2009 the MxToolBox Forums have moved to http://community.mxtoolbox.com/forums
Peter
Product Development Engineer
peter@MXToolBox.com
512-637-8762