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我一次又一次地尝试测试从本地主机发送电子邮件，但我仍然不能。我已经不知道该怎么做了。我尝试搜索以找到解决方案，但找不到。我编辑了 config/mail.php：
<?php
return [
/*
|--------------------------------------------------------------------------
| Mail Driver
|--------------------------------------------------------------------------
|
| Laravel supports both SMTP and PHP's "mail" function as drivers for the
| sending of e-mail. You may specify which one you're using throughout
| your application here. By default, Laravel is setup for SMTP mail.
|
| Supported: "smtp", "mail", "sendmail", "mailgun", "mandrill", "ses", "log"
|
*/
'driver' => env('MAIL_DRIVER', 'smtp'),
/*
|--------------------------------------------------------------------------
| SMTP Host Address
|--------------------------------------------------------------------------
|
| Here you may provide the host address of the SMTP server used by your
| applications. A default option is provided that is compatible with
| the Mailgun mail service which will provide reliable deliveries.
|
*/
'host' => env('MAIL_HOST', 'smtp.gmail.com'),
/*
|--------------------------------------------------------------------------
| SMTP Host Port
|--------------------------------------------------------------------------
|
| This is the SMTP port used by your application to deliver e-mails to
| users of the application. Like the host we have set this value to
| stay compatible with the Mailgun e-mail application by default.
|
*/
'port' => env('MAIL_PORT', 587),
/*
|--------------------------------------------------------------------------
| Global "From" Address
|--------------------------------------------------------------------------
|
| You may wish for all e-mails sent by your application to be sent from
| the same address. Here, you may specify a name and address that is
| used globally for all e-mails that are sent by your application.
|
*/
'from' => ['address' => 'myemail@gmail.com', 'name' => 'Do not Reply'],
/*
|--------------------------------------------------------------------------
| E-Mail Encryption Protocol
|--------------------------------------------------------------------------
|
| Here you may specify the encryption protocol that should be used when
| the application send e-mail messages. A sensible default using the
| transport layer security protocol should provide great security.
|
*/
'encryption' => env('MAIL_ENCRYPTION', 'tls'),
/*
|--------------------------------------------------------------------------
| SMTP Server Username
|--------------------------------------------------------------------------
|
| If your SMTP server requires a username for authentication, you should
| set it here. This will get used to authenticate with your server on
| connection. You may also set the "password" value below this one.
|
*/
'username' => env('MAIL_USERNAME'),
/*
|--------------------------------------------------------------------------
| SMTP Server Password
|--------------------------------------------------------------------------
|
| Here you may set the password required by your SMTP server to send out
| messages from your application. This will be given to the server on
| connection so that the application will be able to send messages.
|
*/
'password' => env('MAIL_PASSWORD'),
/*
|--------------------------------------------------------------------------
| Sendmail System Path
|--------------------------------------------------------------------------
|
| When using the "sendmail" driver to send e-mails, we will need to know
| the path to where Sendmail lives on this server. A default path has
| been provided here, which will work well on most of your systems.
|
*/
'sendmail' => '/usr/sbin/sendmail -bs',
/*
|--------------------------------------------------------------------------
| Mail "Pretend"
|--------------------------------------------------------------------------
|
| When this option is enabled, e-mail will not actually be sent over the
| web and will instead be written to your application's logs files so
| you may inspect the message. This is great for local development.
|
*/
'pretend' => false,
];
`
我已经像这样编辑了 .env 文件：
MAIL_DRIVER=smtp
MAIL_HOST=smtp.gmail.com
MAIL_PORT=587
MAIL_USERNAME=myemail@gmail.com
MAIL_PASSWORD=password
MAIL_ENCRYPTION=null
它仍然产生这样的错误： 
原文由 SRENG Khorn 发布，翻译遵循 CC BY-SA 4.0 许可协议
这些配置对我有用，您使用端口 25,465,587