March 25, 2020 20:03 Updated Follow Autoforward of email to an external email address is prohibited and is blocked from working. Related articles Can I send an email that contains PII (Personally Identifiable Information)? How do I access webmail (OWA)? How can I add a secondary mailbox into Outlook? How do I login to the Secure Mail portal and send a message? What are the key differences in Exchange Online?