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2015/8/9 -I am trying to send a mail through php.. i have tried through php's mail function and phpmailer() function too. but i'm not able to send it.

2019/12/9 -... 認証/アプリパスワード」を使いましょう. というだけの記事です。 SMTP Error: Could not authenticate. エラーにつまった人向けの備忘録です。

2018/11/16 -This error occurs when the application can't establish an SMTP connection to the mail server. Today, we've seen the top 5 causes of this error ...

2018/6/29 -I get the following error message: Fatal error: Uncaught PHPMailer\PHPMailer\Exception: SMTP Error: Could not authenticate.

2024/6/15 -I've gotten to the point where I can login and read and handle email (delete, etc.) but I cannot send mail. When I click on Send I get SMTP Error (): ...

2024/2/27 -Only the password reset email can't be sent due to SMTP Error: Could not authenticate. We are using Office365 via the custom configuration.

2017/4/13 -I'm trying to use PHPMail to sent email connection in a smtp with ntlm authentication. ... 2017-04-13 10:33:55 SMTP Error: Could not authenticate.

2020/7/8 -・sslのエラーが出る ... PHPのバージョンによってはsslでローカルの証明書を確認する?仕様になっているそうです。 その場合は下記の設定を追記が必要です。

2023/4/30 -Instead of using md5(rand()) for generating the password, you should use PHP's built-in password hashing functions like password_hash().

I am having problems with sending using outlook365. When I do some tests using /admin/email_queue.php the first few tests work and then it stops working.