Sending email via Outlook is always problematic. I'd recommend using an SMTP server to send email. If this is a company email, you probably have an official SMTP server you can use. If not, and you have a gmail account, you can use their server. It's just a matter of setting your SAS options correctly. I wrote a blog post about this with code samples and a video you might find useful:
https://blogs.sas.com/content/sastraining/2011/02/07/jedi-sas-tricks-email-from-the-front-part-1/
May the SAS be with you!
Mark