How to fix network error is unreachable when sending mail in cake php 3?

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Good afternoon I have the following code with which I sent mail and it works well in my local but when uploading it to the server it sends me an error: 

2018-11-05 18:36:12 Error: [Cake\Network\Exception\SocketException] Network is unreachable
Request URL: /presolicitud/enviar-certificado/6/116/parcial
Referer URL: http://redpa.pw/solicitudes/view-certificado/6/116/parcial
Stack Trace:
#0 /home/redpa/public_html/vendor/cakephp/cakephp/src/Mailer/Transport/SmtpTransport.php(207): Cake\Network\Socket->connect()
#1 /home/redpa/public_html/vendor/cakephp/cakephp/src/Mailer/Transport/SmtpTransport.php(162): Cake\Mailer\Transport\SmtpTransport->_connect()
#2 /home/redpa/public_html/vendor/cakephp/cakephp/src/Mailer/Email.php(2051): Cake\Mailer\Transport\SmtpTransport->send(Object(Cake\Mailer\Email))
#3 /home/redpa/public_html/vendor/cakephp/cakephp/src/Mailer/Mailer.php(252): Cake\Mailer\Email->send()
#4 /home/redpa/public_html/src/Controller/PresolicitudController.php(2484): Cake\Mailer\Mailer->send('certificado_ema...', Array)
#5 /home/redpa/public_html/vendor/cakephp/cakephp/src/Controller/Controller.php(440): App\Controller\PresolicitudController->enviarCertificado('6', '116', 'parcial')
#6 /home/redpa/public_html/vendor/cakephp/cakephp/src/Http/ActionDispatcher.php(119): Cake\Controller\Controller->invokeAction()
#7 /home/redpa/public_html/vendor/cakephp/cakephp/src/Http/ActionDispatcher.php(93): Cake\Http\ActionDispatcher->_invoke(Object(App\Controller\PresolicitudController))
#8 /home/redpa/public_html/vendor/cakephp/cakephp/src/Http/BaseApplication.php(78): Cake\Http\ActionDispatcher->dispatch(Object(Cake\Http\ServerRequest), Object(Cake\Http\Response))
#9 /home/redpa/public_html/vendor/cakephp/cakephp/src/Http/Runner.php(65): Cake\Http\BaseApplication->__invoke(Object(Cake\Http\ServerRequest), Object(Cake\Http\Response), Object(Cake\Http\Runner))
#10 /home/redpa/public_html/vendor/cakephp/cakephp/src/Routing/Middleware/RoutingMiddleware.php(59): Cake\Http\Runner->__invoke(Object(Cake\Http\ServerRequest), Object(Cake\Http\Response))
#11 /home/redpa/public_html/vendor/cakephp/cakephp/src/Http/Runner.php(65): Cake\Routing\Middleware\RoutingMiddleware->__invoke(Object(Cake\Http\ServerRequest), Object(Cake\Http\Response), Object(Cake\Http\Runner))
#12 /home/redpa/public_html/vendor/cakephp/cakephp/src/Routing/Middleware/AssetMiddleware.php(88): Cake\Http\Runner->__invoke(Object(Cake\Http\ServerRequest), Object(Cake\Http\Response))
#13 /home/redpa/public_html/vendor/cakephp/cakephp/src/Http/Runner.php(65): Cake\Routing\Middleware\AssetMiddleware->__invoke(Object(Cake\Http\ServerRequest), Object(Cake\Http\Response), Object(Cake\Http\Runner))
#14 /home/redpa/public_html/vendor/cakephp/cakephp/src/Error/Middleware/ErrorHandlerMiddleware.php(92): Cake\Http\Runner->__invoke(Object(Cake\Http\ServerRequest), Object(Cake\Http\Response))
#15 /home/redpa/public_html/vendor/cakephp/cakephp/src/Http/Runner.php(65): Cake\Error\Middleware\ErrorHandlerMiddleware->__invoke(Object(Cake\Http\ServerRequest), Object(Cake\Http\Response), Object(Cake\Http\Runner))
#16 /home/redpa/public_html/vendor/cakephp/cakephp/src/Http/Runner.php(51): Cake\Http\Runner->__invoke(Object(Cake\Http\ServerRequest), Object(Cake\Http\Response))
#17 /home/redpa/public_html/vendor/cakephp/cakephp/src/Http/Server.php(80): Cake\Http\Runner->run(Object(Cake\Http\MiddlewareQueue), Object(Cake\Http\ServerRequest), Object(Cake\Http\Response))
#18 /home/redpa/public_html/webroot/index.php(37): Cake\Http\Server->run()
#19 {main}

mail configuration: 

 'EmailTransport' => [
        'default' => [ 
            'className' => 'Smtp',// The following keys are used in SMTP transports
            'host' => 'ssl://smtp.gmail.com', //localhost
            'port' => 465, //25
            'timeout' => 30,
            'username' => '[email protected]',  
            'password' => 'v67367367te',  
            'client' => null,
            'tls' => null,
            'url' => env('EMAIL_TRANSPORT_DEFAULT_URL', null),

        ],
    ],
    
asked by Jasi Enriquez 06.11.2018 в 01:52
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1 answer

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Check that there are no connectivity problems on the server, for example that there is no firewall that blocks connectivity to that outbound port.

If you have shell access to the server you can try to do

telnet smtp.gmail.com 465

And you should see something like this if the port is accessible: 

Trying 74.125.140.109...
Connected to gmail-smtp-msa.l.google.com.
Escape character is '^]'.
    
answered by 16.11.2018 в 09:49
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