Connection could not be established with host mail

问题:

I am getting below error:

Connection could not be established with host smtp.gmail.com [php_network_getaddresses: getaddrinfo failed: No such host is known.

0]

My .env file looks like:

MAIL_HOST=smtp.gmail.com
MAIL_PORT=587
MAIL_USERNAME=xxxxxxxxxxxxxx
MAIL_PASSWORD=xxxxxxxx
#MAIL_ENCRYPTION=null

My mail.php file inside config looks like:

/*
    |--------------------------------------------------------------------------
    | 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", "sparkpost", "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.mailgun.org'),

    /*
    |--------------------------------------------------------------------------
    | 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' => null, 'name' => null],

    /*
    |--------------------------------------------------------------------------
    | 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',

];

Surprisingly I am using this for last 6 months and it didn't error earlier but now when I uploaded my built again on staging I got this error.

Any suggestions would be highly appreciated.

回答1:

I just had this same problem.

It looks like the server is not able to ping the destination address.

I did a quick restart of my dev server and everything is back to normal.

Hope that helps.

回答2:

This problem occurs when some changes have been made to files, specifically in .env file

Clear cache using artisan command

php artisan cache:clear

Clear config

php artisan config:clear

Restart your server

sudo service apache2 restart

More: Try clearing browsers cache & cookies. Hope that works

回答3:

After modify your settings you need to run: php artisan config:cache

Without those laravel will use old ones.

回答4:

Use MAIL_ENCRYPTION= TLS

Try to clear cache, config cache, and restart apache2. It works.

回答5:

The problem is actually a simple typo. In your .env file, change this:

MAIL_DRIVER=smtp MAIL_HOST=mailtrap.io

to this:

MAIL_DRIVER=smtp MAIL_HOST=smtp.mailtrap.io

I prepended the smtp. to the host

回答6:

Edit and following this file: config / mail.php

'driver' => env('MAIL_DRIVER', 'smtp'),
'host' => env('MAIL_HOST', 'your mail host'),
'port' => env('MAIL_PORT', '465'),
'from' => [
        'address' => env('MAIL_FROM_ADDRESS', 'Your email address'),
        'name' => env('MAIL_FROM_NAME', 'Your email Name'),
'encryption' => env('MAIL_ENCRYPTION', 'ssl'),

Don't touch for these two lines

'username' => env('MAIL_USERNAME'),

'password' => env('MAIL_PASSWORD'),

Edit and following this file: /.env

MAIL_DRIVER=smtp
MAIL_HOST=your mail host
MAIL_PORT=465
MAIL_USERNAME=Your smtp email address
MAIL_PASSWORD=Your smtp password
MAIL_ENCRYPTION=ssl

MAIL_FROM_ADDRESS=Your email address
MAIL_FROM_NAME="Your email Name"

Use below artisan command.

Clear cache using artisan command

php artisan config:clear

Clear config

php artisan cache:clear

Restart your server

sudo service httpd restart

It will be works! Enjoy your coding