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Your message wasn't delivered because the recipient's email provider rejected it
Dear all, Recently, I registered 1 account Office 365 trial to experience O365 E3 version before bought it, I create a sharepoint site, upload some document and share with somebody, both the same...
I had the same issue and, I spoke the Microsoft support. The rep. gave me this solution below that worked for me-
1. Login to Admin panel
2. Under Admin Center Click on "Security"
3. Click on "Threat Management"
4. Click on "Policy" under Threat Management
5. Click on "Anti Spam"
6. Expand "Outbound spam filter policy"
7. Click on "Edit Policy"
8. Expand "Automatic forwarding"
9. Put in on "On- Forwarding is enabled"
10. Save and close the window.
Thanks 🙂
