We’d like to connect our Outlook integration to the Microsoft 365 service operated by 21Vianet in China. Everything else is identical to the global Microsoft 365 tenant—only the endpoint URLs differ:
Global (e.g. outlook.office.com)
21Vianet (e.g. outlook.partner.cn)
Could you please add/configure the following 21Vianet endpoint in our integration settings so our customers in Mainland China can authenticate and sync their mailboxes?
Exchange Web Services (EWS): https://outlook.partner.cn/EWS/Exchange.asmx
Graph API base URL (if applicable): https://microsoftgraph.chinacloudapi.cn
Exchange Online Operated by 21Vianet：Exchange Online operated by 21Vianet - Service Descriptions | Microsoft Learn
Let me know if you need any further details or testing credentials. Thank you!
Best regards,