在做项目的过程中，后期客户提出了发送邮件的需求，既然客户有需求，那么没啥说的，上呗。
经过网上的一般资料查找，PHPMailer这个插件貌似用起来不错，那就从github clone一份来，下载链接是PHPMailer。
官当demo如下：当然相关的配置要换成你自己的
//Create a new PHPMailer instance $mail = new PHPMailer; //Tell PHPMailer to use SMTP $mail->isSMTP(); //Enable SMTP debugging // 0 = off (for production use) // 1 = client messages // 2 = client and server messages $mail->SMTPDebug = 2; //Set the hostname of the mail server $mail->Host = 'smtp.qq.com'; //$mail->Host = 'smtp.163.com'; //Set the SMTP port number - likely to be 25, 465 or 587 $mail->Port = 465; $mail->SMTPSecure = "ssl"; //$mail->SMTPAuth = false; //$mail->SMTPSecure = false; //Whether to use SMTP authentication $mail->SMTPAuth = true; //Username to use for SMTP authentication $mail->Username = 'xxxxxxx@qq.com'; //$mail->Username = 'raincowl@163.com'; //Password to use for SMTP authentication //$mail->Password = 'lingshuan008'; $mail->Password = 'password'; //Set who the message is to be sent from //$mail->setFrom('raincowl@163.com', 'fromuser'); $mail->setFrom('xxxxxxx@qq.com', 'fromuser'); //Set an alternative reply-to address //$mail->addReplyTo('raincowl@163.com', 'First Last'); $mail->addReplyTo('xxxxxxx@qq.com', 'First Last'); //Set who the message is to be sent to $mail->addAddress('yyyyyyy@qq.com', 'John Doe'); //Set the subject line $mail->Subject = 'PHPMailer SMTP test'; //Read an HTML message body from an external file, convert referenced images to embedded, //convert HTML into a basic plain-text alternative body //$mail->msgHTML(file_get_contents('contents.html'), __DIR__); $mail->msgHTML('hello,body!'); //Replace the plain text body with one created manually $mail->AltBody = 'This is a plain-text message body'; //Attach an image file //$mail->addAttachment('images/phpmailer_mini.png'); //send the message, check for errors if (!$mail->send()) { echo 'Mailer Error: ' . $mail->ErrorInfo; } else { echo 'Message sent!'; }
首先本地windows下，发送成功，很happy，那就放上linux上试下，一运行，出现
SMTP ERROR: Failed to connect to server: (0) SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting Mailer Error: SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
然后各大技术论坛查资料；首先检查linux服务器上的openssl和sockets已经开启，fsockopen函数也没有禁用，邮箱的smtp服务也已经开启，依然还是不行。至于有一种说法将smtp换成SMTP，是能够发送成功，后来查看下源码，发现这种只是通过sendmail发送的，不是smtp。然后，直接在linux上ping smtp.qq.com,telnet smtp.qq.com 465都没什么问题，可是依然发送报上述的错误，后来查看官网资料，发现下面一段代码
$mail->SMTPOptions = array( 'ssl' => array( 'verify_peer' => false, 'verify_peer_name' => false, 'allow_self_signed' => true ) );
就猜测了是不是自己的ssl认证没有通过，将这段代码加上之后，神奇的事情发生了，邮件发送成功。
到此，问题圆满解决。
如有疑问，可以留言。
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