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Exchange Online Protection IP addresses

Exchange 2013

Applies to: Exchange Online Protection

Topic Last Modified: 2015-02-26

The following data center IP addresses are used by Microsoft Exchange Online Protection (EOP) when sending email. In order to receive messages from EOP, make sure your network allows connections from these IP addresses.

Effective January 1, 2015, the outbound service IP addresses have been expanded to support the growth of the service. Please review the complete list of IP addresses here and ensure that your network will allow connections from them. If you started using the service prior to January 1, 2015, you don't need to take action immediately, but we recommend that you allow connections from these IP addresses as soon as you can, so that you’re prepared for future service upgrades.


The IP address ranges provided here are only used for relay through customer connectors. Changes to the list of IP addresses are rare, and are communicated in advance. To ensure that messages that you send to your business partners, a smart host, or an on-premises environment route through the service’s published range of IP addresses, you must configure the correct connector for routing to each destination. For more information about connectors, see Set up connectors to route mail between Office 365 and your own email servers. 
The IP addresses in this topic can change over time. For a record of all IP addresses that have been added, changed, or deprecated in the past year, see Change notification for EOP IP addresses.

For information about IP addresses used by Microsoft Office 365, see Office 365 URLs and IP address ranges.

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