Sending email in terminal service/citrix server

Hi I want to know is there any one expreiance a problem with terminal service and exchange (outlook) while sending emails. i loged into terminal service and using navision when i tried to send a report by email first time i could able to send it next time it says Error message 1 The action could not be completed Error message 2 send email failed to send message Can any one help me that could be great thanks