Microsoft 365 Common and Office Online

yasser Mohamed AbdelMoneim 291 Reputation points
2021-07-11T13:53:15.453+00:00

Hello

for Microsoft 365 Common and Office Online :
https://learn.microsoft.com/en-us/microsoft-365/enterprise/urls-and-ip-address-ranges?view=o365-worldwide#microsoft-365-common-and-office-online

what are the use for these ports and is it required for Exo and hybrid configuration?

Microsoft Exchange Online Management
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Microsoft Exchange Hybrid Management
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Accepted answer
  1. Andy David - MVP 142.7K Reputation points MVP
    2021-07-11T14:55:50.88+00:00

    Those IPs and FQDNs are not required for Hybrid, but some are needed for access to the 365 portal or Sharepoint or for client access to EXo etc...
    If you allow outbound traffic on 443/80 from from your network, then you wont have any issues. Those are really listed there for documentation sake or if you really lock down outbound connections.


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