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
    2021-05-20T20:58:02+00:00

    I also had to log in to https://outlook.office365.com/ and update my password.

    Updated it in the application and it worked!

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  2. Anonymous
    2021-05-24T17:15:09+00:00

    Hi Maria , 

    Did you manage to fix this? I am having very similar issues (also using godaddy ..) 

    Thanks

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  3. Anonymous
    2021-05-25T22:34:21+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.

    0130

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  4. Anonymous
    2021-06-28T20:17:59+00:00

    Caro Marvin,

    Fiz todas as configurações possíveis:

    1. Autenticação SMTP da conta do Outlook. 365 foi habilitada.
    2. Executar os comandos do PowerShell como administrador global.

    Não funcionou. O software de terceiro retorna o erro:

    535 5.7.3 Autenticação sem sucesso

    CP5P284CA0014.BR-284.PROD.OUTLOOK.COM

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  5. Anonymous
    2021-07-05T07:21:46+00:00

    What did you had to tell them brian? We also have godaddy for email provider.

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