We're experiencing an issue where users can log into OWA, see and reply to email, work in the calendar/contacts/etc, but when they try to send a NEW message from scratch (by clicking New - Message) the "sent" message wills show up in sent items but will not actually go anywhere. All services are running, ran BPA and satisfied that, ensured Outlook 2003/2007 clients and Blackberries are all working correctly. Any ideas?Beau

Hi,I'd like to clarify the issue with you:1. Message appear in sent item do not sent to the recipient, is that true?2. Please verify if OWA user can send email to internal network user or external(non-domain) user.3. Please verify if all the OWA users cannot send emails.4. Please verify if you will get the NDR.Please post the result here.Regards,Xiu