Laravel使用域名邮箱SMTP发送邮件认证失败求助

问题描述 #

在Laravel中使用自定义域名邮箱support@myDomain.io发送邮件时，出现SMTP认证失败错误，相同代码配置普通Gmail邮箱可正常发送。错误信息如下：

Swift_TransportException Failed to authenticate on SMTP server with username "support@xamer.io" using 3 possible authenticators. Authenticator LOGIN returned Expected response code 235 but got code "535", with message "535-5.7.8 Username and Password not accepted. Learn more at 535 5.7.8 https://support.google.com/mail/?p=BadCredentials o28-20020aa7979c000000b005809a3c1b6asm11901153pfp.201 - gsmtp ". Authenticator PLAIN returned Expected response code 235 but got code "535", with message "535-5.7.8 Username and Password not accepted. Learn more at 535 5.7.8 https://support.google.com/mail/?p=BadCredentials o28-20020aa7979c000000b005809a3c1b6asm11901153pfp.201 - gsmtp ". Authenticator XOAUTH2 returned Expected response code 250 but got code "535", with message "535-5.7.8 Username and Password not accepted. Learn more at 535 5.7.8 https://support.google.com/mail/?p=BadCredentials o28-20020aa7979c000000b005809a3c1b6asm11901153pfp.201 - gsmtp ".

相关配置 #

.env配置（自定义域名邮箱） #

MAIL_MAILER=smtp
MAIL_HOST=smtp.gmail.com
MAIL_PORT=587
MAIL_USERNAME=support@myDomain.io
MAIL_PASSWORD=******
MAIL_ENCRYPTION=tls
MAIL_FROM_ADDRESS=support@myDomain.io
MAIL_FROM_NAME="${APP_NAME}"

控制器代码 #

Mail::to($data->email)->send(new EmailVerify($data));

app/Mail/EmailVerify.php代码 #

<?php

namespace App\Mail;

use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Mail\Mailable;
use Illuminate\Queue\SerializesModels;

class EmailVerify extends Mailable
{
    use Queueable, SerializesModels;

    /**
     * Create a new message instance.
     *
     * @return void
     */
    public function __construct($data)
    {
        $this->data = $data;
    }

    /**
     * Build the message.
     *
     * @return $this
     */
    public function build()
    {
        return $this->subject('Email from '.env('APP_NAME'))->view('mail.emailVerify')->with(['data' => $this->data]);
    }
}

config/mail.php配置 #

<?php

return [

    /*
    |--------------------------------------------------------------------------
    | Default Mailer
    |--------------------------------------------------------------------------
    |
    | This option controls the default mailer that is used to send any email
    | messages sent by your application. Alternative mailers may be setup
    | and used as needed; however, this mailer will be used by default.
    |
    */

    'default' => env('MAIL_MAILER', 'smtp'),

    /*
    |--------------------------------------------------------------------------
    | Mailer Configurations
    |--------------------------------------------------------------------------
    |
    | Here you may configure all of the mailers used by your application plus
    | their respective settings. Several examples have been configured for
    | you and you are free to add your own as your application requires.
    |
    | Laravel supports a variety of mail "transport" drivers to be used while
    | sending an e-mail. You will specify which one you are using for your
    | mailers below. You are free to add additional mailers as required.
    |
    | Supported: "smtp", "sendmail", "mailgun", "ses",
    |            "postmark", "log", "array"
    |
    */

    'mailers' => [
        'smtp' => [
            'transport' => 'smtp',
            'host' => env('MAIL_HOST', 'smtp.mailgun.org'),
            'port' => env('MAIL_PORT', 587),
            'encryption' => env('MAIL_ENCRYPTION', 'tls'),
            'username' => env('MAIL_USERNAME'),
            'password' => env('MAIL_PASSWORD'),
            'timeout' => null,
            'auth_mode' => null,
        ],

        'ses' => [
            'transport' => 'ses',
        ],

        'mailgun' => [
            'transport' => 'mailgun',
        ],

        'postmark' => [
            'transport' => 'postmark',
        ],

        'sendmail' => [
            'transport' => 'sendmail',
            'path' => '/usr/sbin/sendmail -bs',
        ],

        'log' => [
            'transport' => 'log',
            'channel' => env('MAIL_LOG_CHANNEL'),
        ],

        'array' => [
            'transport' => 'array',
        ],
    ],

    /*
    |--------------------------------------------------------------------------
    | 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' => env('MAIL_FROM_ADDRESS', 'hello@example.com'),
        'name' => env('MAIL_FROM_NAME', 'Example'),
    ],

    /*
    |--------------------------------------------------------------------------
    | Markdown Mail Settings
    |--------------------------------------------------------------------------
    |
    | If you are using Markdown based email rendering, you may configure your
    | theme and component paths here, allowing you to customize the design
    | of the emails. Or, you may simply stick with the Laravel defaults!
    |
    */

    'markdown' => [
        'theme' => 'default',

        'paths' => [
            resource_path('views/vendor/mail'),
        ],
    ],

];

正常工作的Gmail配置 #

MAIL_MAILER=smtp
MAIL_HOST=smtp.gmail.com
MAIL_PORT=587
MAIL_USERNAME=mymail.gmail.com
MAIL_PASSWORD=*******
MAIL_ENCRYPTION=tls
MAIL_FROM_ADDRESS=mymail.gmail.com
MAIL_FROM_NAME="${APP_NAME}"

解决方案 #

• 确认账号类型与权限
  如果自定义域名邮箱属于Google Workspace（原G Suite）账号：
  • 不能直接使用邮箱登录密码，需先开启账号两步验证，再生成应用专用密码替换.env中的MAIL_PASSWORD
  • 确保管理员未限制该账号的SMTP服务权限
• 检查账号安全状态
  登录support@myDomain.io对应的Google账号，查看是否有异常登录提醒，解除账号安全限制
• 修正配置细节
  确认.env中的MAIL_USERNAME是完整邮箱地址，域名部分无拼写错误
• 清除配置缓存
  执行以下命令清除Laravel配置缓存，避免旧配置干扰：

  php artisan config:clear
  php artisan cache:clear
  

内容的提问来源于stack exchange，提问作者Neeraj Yadav