Major Incident Review - Office 365 Users Unable to Receive Emails

Major Incident Review - Office 365 Users Unable to Receive Emails

Major Incident Causing Product - Office 365
Affected Users - Office 365 Users
Date - January 17, 2019
Tests Performed
      Scenario 1 - Send a test email from inside the organization - Failed
      Scenario 2 - Send a test email from outside the organization - Failed
      Scenario 3 - Check exchange servers queue - Queue was showing on emails sent to Office 365 Users
      Scenario 4 - Check Office 365 email blocked list - It was not blocked
Why it Happened - There was an issue with Public IP of Exchange Servers
How it was Solved - Give exchange servers a new Public IP address in coordination with Network Team.

Beza Melaku

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