服务器上的 PHPMailer smtp 连接失败

Question

我正在使用 PHPMailer class 从我的网站发送电子邮件，在本地它工作正常但在我的在线服务器上我收到错误：

2018-05-28 12:03:40 Connection: opening to ssl://smtp.gmail.com:465, timeout=300, options=array()
2018-05-28 12:03:40 Connection failed. Error #2: stream_socket_client(): SSL operation failed with code 1. OpenSSL Error messages:error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed [/home/beesystems/public_html/specs/vendor/phpmailer/phpmailer/src/SMTP.php line 325]
2018-05-28 12:03:40 Connection failed. Error #2: stream_socket_client(): Failed to enable crypto [/home/beesystems/public_html/specs/vendor/phpmailer/phpmailer/src/SMTP.php line 325]
2018-05-28 12:03:40 Connection failed. Error #2: stream_socket_client(): unable to connect to ssl://smtp.gmail.com:465 (Unknown error) [/home/beesystems/public_html/specs/vendor/phpmailer/phpmailer/src/SMTP.php line 325]
2018-05-28 12:03:40 SMTP ERROR: Failed to connect to server: (0)
SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting

代码：

            $mail = new PHPMailer();
            $mail->IsSMTP();
            $mail->SMTPAuth = true;
            $mail->SMTPSecure = 'ssl';
            $mail->Host = "smtp.gmail.com";
            $mail->Port = 465;

           $mail->Username = \Yii::$app->params['mailer-account'];
           $mail->Password = \Yii::$app->params['mailer-password'];

Answer 1

这是重要的部分：

SSL routines:ssl3_get_server_certificate:certificate verify failed

错误消息链接到的故障排除指南对此进行了广泛介绍，并且已在此处多次回答。在端口 587 上将 SMTPSecure 切换为 tls 无济于事。您的服务器很可能是运行旧版本的 PHP，或者具有过时的 CA 证书包。

服务器上的 PHPMailer smtp 连接失败

PHPMailer smtp connection failed on server

php

ssl

smtp

phpmailer

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