Microsoft Exchange 2003 & HP openview servicedesk

I have installed and configured hp openview 5 service desk. all email configuration are correct i can send test mail from hp server but when i send an email with subject (new) from any outlook client to hp server to automatically open a new service call it seems that the emails are not being forwarded to hp server .is there anything to be added to echange server ?
note: emails send from hp server are saved in junck email at client maibox