Symfony2 SwiftMailer 无法与主机 smtp.gmail.com 建立连接

在阅读并测试了很多解决方案后，我仍然收到此错误。

我的参数.yml

parameters:
    database_host: 127.0.0.1
    database_port: null
    database_name: symfony
    database_user: root
    database_password: null
    secret: holamundo
    mailer_transport: smtp
    mailer_encryption: ssl
    mailer_port: 465
    mailer_auth_mode: login
    mailer_host: smtp.gmail.com
    mailer_user: [email protected] /cdn-cgi/l/email-protection
    mailer_password: nottherealone

还有我的 config.yml

# Swiftmailer Configuration
swiftmailer:
    transport: %mailer_transport%
    encryption: %mailer_encryption%
    auth_mode: %mailer_auth_mode%
    host: %mailer_host%
    port: %mailer_port%
    username: %mailer_user%
    password: %mailer_password%
    spool: { type: memory }

并通过命令行测试 swiftmailer...

php bin/console swiftmailer:email:send

我收到此错误：

[app] Exception occurred while flushing email queue: Connection could not be established with host smtp.gmail.com [ #0] [] []

如果我 ping 'smtp.gmail.com' 我会收到回复。

我在 localhost:8000 上运行 symfony，很多人说将 mailer_host 更改为类似...

mailer_host: 127.0.0.1

但我在不同的端口上运行它，所以如果我把它

mailer_host: 127.0.0.1:8000 

甚至这个

mailer_host: 127.0.0.1
mailer_port: 8000

I get:

ERROR     [app] Exception occurred while flushing email queue: Expected response code 220 but got code "", with message "" [] []

Thanks !

如果您想使用 gmail 进行测试，您的parameter.yml 文件应该如下所示

mailer_transport: gmail
mailer_host: null
mailer_user: email_address
mailer_password: 'password'

在您的控制器中使用它

    $messenger = \Swift_Message::newInstance();
    $messenger->setFrom(array("email_address" => "The name you want to be displayed "));

   $messenger->setTo(array($email1, $email2, ...));
   $messenger->setCc(array($email1, $email2, ...));      
   $messenger->setSubject($subject);
   $messenger->setBody($body, 'text/html');      
   $this->mailer->send($messenger);

有关在 symfony 中发送电子邮件的更多信息，请参阅此处https://symfony.com/doc/current/email.html https://symfony.com/doc/current/email.html