Settings for POP and IMAP access for Office 365 operated by 21Vianet

Note: This article applies to Office 365 operated by 21Vianet in China. All other customers should see POP and IMAP settings for Outlook Office 365 for business.

Exchange Online supports mailbox access through the IMAP4 or POP3 protocol. The SMTP protocol is used to send outbound mail for clients that connect to Exchange Online through IMAP or POP. To configure for POP and IMAP access, use these settings:

Server name

Port

Encryption method

POP3

partner.outlook.cn

995

SSL

IMAP4

partner.outlook.cn

993

SSL

SMTP

smtp.partner.outlook.cn

587

TLS

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