MC266466 – New outbound relay pool (archived)

Admin impact, Exchange Online, Major update, Plan For Change, User impact

check before: 2021-07-16

Product:

Exchange, SharePoint

Platform:

Online, World tenant

Status:

Change type:

Admin impact, User impact

Links:

Details:

We're making some changes to harden the configuration for relaying or forwarding email through Office 365.
Starting July 27, 2021, we are updating special relay pools, a separate IP address pool that is used for relayed or forwarded mails that are sent from domains that are not a part of accepted domains in your tenant. Only messages that are sent from domains that are not accepted domains in your tenant are impacted by this change.

Change Category:
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Scope:
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Release Phase:

Created:
2021-07-03

updated:
2021-07-08

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MC266466 – New outbound relay pool (archived)

check before: 2021-07-16

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