Exchange Mailbox Agent User Mailbox Hybrid - Port Requirements

The following table contains network ports that must be opened for Exchange Online backup.

Environment

Source

Destination

Protocol

Ports

URL

All regions

Access Node (Mailbox)

Microsoft Exchange Online

HTTPS

80,443

  • https://outlook.office365.com/Powershell-LiveID

  • https://outlook.office365.com/EWS/Exchange.asmx

China region

Access Node (Mailbox)

Microsoft Exchange Online

HTTPS

80,443

  • https://partner.outlook.cn/PowerShell

  • https://partner.outlook.cn/EWS/Exchange.asmx

  • https://login.chinacloudapi.cn/

  • https://microsoftgraph.chinacloudapi.cn

  • https://partner.outlook.cn/

Germany region

Access Node (Mailbox)

Microsoft Exchange Online

HTTPS

80,443

  • https://outlook.office.de/PowerShell-LiveID

  • https://outlook.office.de/EWS/Exchange.asmx

  • https://login.microsoftonline.de/

  • https://graph.microsoft.de/

  • https://outlook.office.de/

US Government

Access Node (Mailbox)

Microsoft Exchange Online

HTTPS

80,443

  • https://portal.azure.us

  • https://login.microsoftonline.us

  • https://graph.microsoft.us/

  • https://outlook.office365.us/powershell-liveid/

U.S. Government GCC High endpoints

Access Node (Mailbox)

Microsoft Exchange Online

(HTTP)HTTPS

80,443

  • https://outlook.office.us/powershell-liveid/

  • https://outlook.office365.us/EWS/Exchange.asmx

  • https://login.microsoftonline.us

  • https://graph.microsoft.us

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