Sending, receiving, and organizing email in Outlook.com
Hi Shirley,
Good day. At the moment, there does not appear to be a widely published official outage notice from Microsoft Outlook regarding this issue. For the meantime, try to do some alternatives and checkings.
- Add Gmail and Yahoo senders to your Safe Senders list: Go to Outlook Settings > Mail > Junk Email > Safe Senders.
- Test your Outlook email if it can receive from another Outlook account or other email domain.
- Try to tell your sender to reply to an old thread from your Outlook mail, instead of sending a new mail.
Though the error message is not a filtering / rule related, it is still worth checking for accidental blocking.
- Sign in to Outlook Web Mail.
- Click the gear icon > Mail > Rules.
- Look for any rules mentioning: gmail.com, yahoo.com, delete, move to junk, move to deleted.
- Also check: Mail > Junk email. Blocked senders list. Safe senders list.
- If you see Gmail or Yahoo domain being blocked, remove them.
Regards,
Jhun