Office 365 2 factor authentication6/19/2023 ![]() How can I send SMTP Mail using two-step verification? I have also created Two Active users like user1 and user2. #3 C:\xampp\htdocs\dede\register.php(187): PHPMailer->send() #2 C:\xampp\htdocs\dede\PHPMailer\(1215): PHPMailer->postSend() #1 C:\xampp\htdocs\dede\PHPMailer\(1340): PHPMailer->smtpSend('Date: Wed, 10 F.', 'This is a multi.') ![]() #0 C:\xampp\htdocs\dede\PHPMailer\(1557): PHPMailer->smtpConnect(Array) 05:33:38 SMTP Error: Could not authenticate.įatal error: Uncaught phpmailerException: SMTP Error: Could not authenticate. ![]() In this article, we’ll take a look at how to disable MFA in Microsoft 365 for multiple users or a single one. MFA provides additional security when performing user authentication. Office 365) is an authentication method that requires more than one factor to be used to authenticate a user. 05:33:38 SERVER -> CLIENT: 221 2.0.0 Service closing transmission channel Multi-Factor Authentication (MFA) in Microsoft 365 (ex. 05:33:38 SMTP -> get_lines(): $str is "221 2.0.0 Service closing transmission channel 05:33:37 SMTP Error: Could not authenticate. 05:33:37 SMTP ERROR: Password command failed: 535 5.7.3 Authentication unsuccessful 05:33:37 SERVER -> CLIENT: 535 5.7.3 Authentication unsuccessful 05:33:37 SMTP -> get_lines(): $str is "535 5.7.3 Authentication unsuccessful 05:33:32 Auth methods available on the server: LOGIN,XOAUTH2 I also enable two-step verification in my account at the Security info display in the picture:īut whenever I am sent a mail using this account that will give me an error like this. I have created an office 365 admin account with the domain name.
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