535: 5.7.3 Authentication unsuccessful

Anonymous
2020-04-16T10:47:36+00:00

Hello,

I have an issue when using an O365 account and sending emails from an application.

The application has been suitable to use tls/starttls, port 587, ect.

When entering an email account and password, the following message occurs:

"535: 5.7.3 Authentication unsuccessful"

I would like to understand, what are the mininal features of an O365 account so that it can be used from another application.

I have performed different tests, which allow me to indicate that the account is Ok.

Thank you.

Microsoft 365 and Office | Subscription, account, billing | For home | Windows

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  1. Anonymous
    2021-03-15T23:23:45+00:00

    Jarrid's answer works perfectly for me. 

    This whole issue is more like a bug in Microsoft outlook admin. In the admin page, I can see the email account has 'SMTP Authentication' ticked. However, when run commands from Jarrid's answer, it shows the value is unset.

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  3. Anonymous
    2021-03-24T09:09:39+00:00

    Hello,

    I have an issue when using an O365 account and sending emails from an application.

    The application has been suitable to use tls/starttls, port 587, ect.

    When entering an email account and password, the following message occurs:

    "535: 5.7.3 Authentication unsuccessful"

    I would like to understand, what are the mininal features of an O365 account so that it can be used from another application.

    I have performed different tests, which allow me to indicate that the account is Ok.

    Thank you.

    Check your mail's extension, try replacing .com with .co.in, this worked for me

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  4. Anonymous
    2021-04-25T03:20:04+00:00

    u can try turn off AZURE certification. i did it and it works. 

    Also u need to go to Microsoft 365 admin center

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  5. Anonymous
    2021-05-18T11:01:50+00:00

    When I try to configure the new email account on Odoo system I got this error , connection test failed here is what we got instead 5.7.3 authentication unsuccessful AM3PR07CA0129.eurprd07.prod.outlook.com  

    Also yesterday one of the Microsoft support team made a remote session to help fix the error      conection test failed here is what we got instead 535 5.7.139 authentication unsuccessful , smtpclintauthentication is disabled for tenant visit https://aka.ms/smtp_auth_Pdisabled for more information [BLAPR03CA0085.namprd03.prod.outlook.com]        but  it did not work 

    Kindly help

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