> Essential > Applications > Office 365 > Exchange Online > Getting Started > System Requirements

Port Requirements for Exchange Online

To use the express configuration option in the Office 365 guided setup, on the Web Server and the access nodes, you must open the ports that are used to communicate with the Command Center.

Environment

Source

Destination

Protocol

Ports

URLs

All regions (US GCC)

Access node (Mailbox)

Exchange Online

HTTPS

443

  • https://www.office.com

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

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

  • https://login.microsoftonline.com

  • https://graph.microsoft.com

China

Access node (Mailbox)

Exchange Online

HTTPS

443

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

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

  • https://login.chinacloudapi.cn

  • https://microsoftgraph.chinacloudapi.cn

Germany

Access node (Mailbox)

Exchange Online

HTTPS

443

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

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

  • https://graph.microsoft.de

  • https://login.microsoftonline.de

US Government (US GCC HIGH)

Access node (Mailbox)

Exchange Online

HTTPS

443

  • https://portal.azure.us

  • https://login.microsoftonline.us

  • https://graph.microsoft.us/

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

Use the Express Configuration Option in the Office 365 Guided Setup for Exchange Online

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