themrt93

Hello Sir, thank you for your help.

These are exactly the steps which i allready followed. According to the information in these tutorials i also activated “authentifiziertes smtp” for the user with the app password in wp mail smtp.

MFA is also enforced for the user.
But i still got the same erros the code is below

Versions:
WordPress: 6.3.1
WordPress MS: No
PHP: 7.4.33
WP Mail SMTP: 3.9.0

Params:
Mailer: smtp
Constants: No
ErrorInfo: SMTP Error: Could not authenticate.
Host: smtp.office365.com
Port: 587
SMTPSecure:tls
SMTPAutoTLS:bool(true)
SMTPAuth:bool(true)

Server:
OpenSSL: OpenSSL 1.1.1n 15 Mar 2022

Debug:
E-Mail-Quelle WP Mail SMTP Mailer: Anderer SMTP-Server SMTP Error: Could not authenticate.

SMTP Debug:
2023-09-13 13:47:38 Connection: opening to smtp.office365.com:587, timeout=300, options=array()
2023-09-13 13:47:38 Connection: opened
2023-09-13 13:47:38 SERVER -> CLIENT: 220 FR2P281CA0149.outlook.office365.com Microsoft ESMTP MAIL Service ready at Wed, 13 Sep 2023 13:47:37 +0000
2023-09-13 13:47:38 CLIENT -> SERVER: EHLO tvoelkner.de
2023-09-13 13:47:38 SERVER -> CLIENT: 250-FR2P281CA0149.outlook.office365.com Hello [82.165.88.214]250-SIZE 157286400250-PIPELINING250-DSN250-ENHANCEDSTATUSCODES250-STARTTLS250-8BITMIME250-BINARYMIME250-CHUNKING250 SMTPUTF8
2023-09-13 13:47:38 CLIENT -> SERVER: STARTTLS
2023-09-13 13:47:38 SERVER -> CLIENT: 220 2.0.0 SMTP server ready
2023-09-13 13:47:38 CLIENT -> SERVER: EHLO tvoelkner.de
2023-09-13 13:47:38 SERVER -> CLIENT: 250-FR2P281CA0149.outlook.office365.com Hello [82.165.88.214]250-SIZE 157286400250-PIPELINING250-DSN250-ENHANCEDSTATUSCODES250-AUTH LOGIN XOAUTH2250-8BITMIME250-BINARYMIME250-CHUNKING250 SMTPUTF8
2023-09-13 13:47:38 CLIENT -> SERVER: AUTH LOGIN
2023-09-13 13:47:38 SERVER -> CLIENT: 334 VXNlcm5hbWU6
2023-09-13 13:47:38 CLIENT -> SERVER: [credentials hidden]
2023-09-13 13:47:38 SERVER -> CLIENT: 334 UGFzc3dvcmQ6
2023-09-13 13:47:38 CLIENT -> SERVER: [credentials hidden]
2023-09-13 13:47:50 SERVER -> CLIENT: 535 5.7.139 Authentication unsuccessful, the request did not meet the criteria to be authenticated successfully. Contact your administrator. [FR2P281CA0149.DEUP281.PROD.OUTLOOK.COM 2023-09-13T13:47:50.564Z 08DBB3C5138FD75C]
2023-09-13 13:47:50 SMTP ERROR: Password command failed: 535 5.7.139 Authentication unsuccessful, the request did not meet the criteria to be authenticated successfully. Contact your administrator. [FR2P281CA0149.DEUP281.PROD.OUTLOOK.COM 2023-09-13T13:47:50.564Z 08DBB3C5138FD75C]
SMTP Error: Could not authenticate.
2023-09-13 13:47:50 CLIENT -> SERVER: QUIT
2023-09-13 13:47:50 SERVER -> CLIENT: 221 2.0.0 Service closing transmission channel
2023-09-13 13:47:50 Connection: closed
SMTP Error: Could not authenticate.

I hope someone have an idea what i still can try or what could be the problem.

Thanks in advance for the help!