在office 365中启用两步验证的情况下未发送SMTP邮件

Question

我已使用域名创建了一个office 365管理员帐户。我还在图片中的安全信息显示中启用了我的帐户的两步验证：

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但是，每当我使用此帐户发送邮件时，都会出现这样的错误。

2021-02-10 05:33:32 Auth method requested: UNKNOWN
2021-02-10 05:33:32 Auth methods available on the server: LOGIN,XOAUTH2
2021-02-10 05:33:32 Auth method selected: LOGIN
2021-02-10 05:33:32 CLIENT -> SERVER: AUTH LOGIN
2021-02-10 05:33:32 SMTP -> get_lines(): $data is ""
2021-02-10 05:33:32 SMTP -> get_lines(): $str is  "334 VXNlcm5hbWU6
                                      "
2021-02-10 05:33:32 SERVER -> CLIENT: 334 VXNlcm5hbWU6
2021-02-10 05:33:32 CLIENT -> SERVER: xxx
2021-02-10 05:33:32 SMTP -> get_lines(): $data is ""
2021-02-10 05:33:32 SMTP -> get_lines(): $str is  "334 UGFzc3dvcmQ6
                                      "
2021-02-10 05:33:32 SERVER -> CLIENT: 334 UGFzc3dvcmQ6
2021-02-10 05:33:32 CLIENT -> SERVER: xxx
2021-02-10 05:33:37 SMTP -> get_lines(): $data is ""
2021-02-10 05:33:37 SMTP -> get_lines(): $str is  "535 5.7.3 Authentication unsuccessful [PN0PR01CA0004.INDPRD01.PROD.OUTLOOK.COM]
                                      "
2021-02-10 05:33:37 SERVER -> CLIENT: 535 5.7.3 Authentication unsuccessful [PN0PR01CA0004.INDPRD01.PROD.OUTLOOK.COM]
2021-02-10 05:33:37 SMTP ERROR: Password command failed: 535 5.7.3 Authentication unsuccessful [PN0PR01CA0004.INDPRD01.PROD.OUTLOOK.COM]
2021-02-10 05:33:37 SMTP Error: Could not authenticate.
2021-02-10 05:33:37 CLIENT -> SERVER: QUIT
2021-02-10 05:33:38 SMTP -> get_lines(): $data is ""
2021-02-10 05:33:38 SMTP -> get_lines(): $str is  "221 2.0.0 Service closing transmission channel
                                      "
2021-02-10 05:33:38 SERVER -> CLIENT: 221 2.0.0 Service closing transmission channel
2021-02-10 05:33:38 Connection: closed
2021-02-10 05:33:38 SMTP Error: Could not authenticate.
<br />
<b>Fatal error</b>:  Uncaught phpmailerException: SMTP Error: Could not authenticate. in C:\xampp\htdocs\dede\PHPMailer\class.phpmailer.php:1714
Stack trace:
#0 C:\xampp\htdocs\dede\PHPMailer\class.phpmailer.php(1557): PHPMailer-&gt;smtpConnect(Array)
#1 C:\xampp\htdocs\dede\PHPMailer\class.phpmailer.php(1340): PHPMailer-&gt;smtpSend('Date: Wed, 10 F...', 'This is a multi...')
#2 C:\xampp\htdocs\dede\PHPMailer\class.phpmailer.php(1215): PHPMailer-&gt;postSend()
#3 C:\xampp\htdocs\dede\register.php(187): PHPMailer-&gt;send()
#4 {main}

如何使用两步验证发送SMTP邮件？我还创建了两个活动用户，如user1和user2。如果我想用这个用户发送SMTP邮件，我能做些什么呢？

Answer 1

为了使用SMTP身份验证，Office 365需要启用以下设置：

Host = "smtp.office365.com"
Port = 587
SMTPAuth = true;
SMTPSecure = "tls";
SMTPAutoTLS = true;

此外，SMTP的值必须与Username的值匹配，否则微软的From服务器将拒绝它。

第二:检查是否为该邮箱启用了SMTP AUTH，请参阅https://docs.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/authenticated-client-smtp-submission

另外:如果你必须为这个账户使用MFA，那么确保你使用一个应用程序密码：https://docs.microsoft.com/en-us/azure/active-directory/user-help/multi-factor-authentication-end-user-app-passwords