365 smtp setting4/29/2023 It is no longer possible to re-enable Basic Auth or use App passwords.įor latest Office 365 pre-upgrade, use the following settings: Standalone devices (requires very little interaction):ĭesktop apps (requires user interaction): Authenticationįor Exchange Online/Office 365, we recommend using OAuth 2.0 flows:ĭaemons/Services: Password grant (MFA/2FA must be turned off for this account):ĭaemons/Services: Client credential flow: SMTP server requires explicit SSL – use Connect and StartTLS method. User: or and POP3 servers allow both: implicit/TLS SSL and explicit SSL/TLS, so you can ConnectSSL method -or- Connect and StartTLS. SSL: true-implicit, true-explicit (StartTLS) Latest Office 365 versionįor latest Office 365 after the service upgrade, use the following settings: IMAP Below you can find the configuration settings for all protocols. Outlook365 supports access via IMAP, POP3 and SMTP protocols.
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