Sending mails from SAP inbox to Outlook

Hi,

I am able to send mails to the SAP user's inbox in the SAP workplace thru my abap program but i would like send it to their outlook mail box. I'm able to get mails if i configure outlook to receive emails from SAP mail box but i would like to do it vice versa. I got the user's SMTP address.how do i do it? Is there any configurations are necessary or anything to do with my exchange server? give me some valid sugesstions.