olá, preciso de uma luz, estou com o seguinte problema: authenticationfailedexception: 535 5.7.139 authentication unsuccessful, vendo as orientações anteriores, sei que é um erro de autenticação e fiz alguns processos mais sem sucesso.

vagner 0 Reputation points
2024-11-19T17:09:53.8333333+00:00

Estou fazendo o vinculo de serviço de e-mail com nosso sistema interno e quando tento fazer o teste de envio de e-mail acaba não enviando e foi identificado um erro no log, segue imagem anexada.

o mesmo diz ser um erro de autenticação, sendo assim não consegui identificar o motivo desse erro.

Microsoft 365
Microsoft 365
Formerly Office 365, is a line of subscription services offered by Microsoft which adds to and includes the Microsoft Office product line.
5,276 questions
Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
4,629 questions
0 comments No comments
{count} votes

1 answer

Sort by: Most helpful
  1. Bruce Jing-MSFT 6,630 Reputation points Microsoft Vendor
    2024-11-20T08:26:57.2866667+00:00

    Hi,@vagner

    Thanks for posting your question in the Microsoft Q&A forum.

    To my knowledge, there may be other two possible causes of this issue. Please refer to this link and check point 3 (Azure Security Defaults) and point 4 (Conditional Access policy): Error: Authentication unsuccessful

    123478-08.jpg

    These settings would block Legacy Authentication.


    If the response is helpful, please click "Accept Answer" and upvote it. Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.


Your answer

Answers can be marked as Accepted Answers by the question author, which helps users to know the answer solved the author's problem.