title: Connection could not be established with host mailtrap.io [php_network_getaddresses: getaddrinfo failed: No such host is known. #0]
body: <p>I am getting below error:</p>
  <blockquote>
  <p>Connection could not be established with host smtp.gmail.com
  [php_network_getaddresses: getaddrinfo failed: No such host is known.</p>
  <h1>0]</h1>
  </blockquote>
  <p>My .env file looks like:</p>
  <pre><code>MAIL_HOST=smtp.gmail.com
  MAIL_PORT=587
  MAIL_USERNAME=xxxxxxxxxxxxxx
  MAIL_PASSWORD=xxxxxxxx
  #MAIL_ENCRYPTION=null
  </code></pre>
  <p>My mail.php file inside config looks like:</p>
  <pre><code>/*
      |--------------------------------------------------------------------------
      | Mail Driver
      |--------------------------------------------------------------------------
      |
      | Laravel supports both SMTP and PHP's &quot;mail&quot; 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: &quot;smtp&quot;, &quot;mail&quot;, &quot;sendmail&quot;, &quot;mailgun&quot;, &quot;mandrill&quot;,
      |            &quot;ses&quot;, &quot;sparkpost&quot;, &quot;log&quot;
      |
      */
  
      'driver' =&gt; 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' =&gt; 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' =&gt; env('MAIL_PORT', 587),
  
      /*
      |--------------------------------------------------------------------------
      | Global &quot;From&quot; 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' =&gt; ['address' =&gt; null, 'name' =&gt; 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' =&gt; 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 &quot;password&quot; value below this one.
      |
      */
  
      'username' =&gt; 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' =&gt; env('MAIL_PASSWORD'),
  
      /*
      |--------------------------------------------------------------------------
      | Sendmail System Path
      |--------------------------------------------------------------------------
      |
      | When using the &quot;sendmail&quot; 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' =&gt; '/usr/sbin/sendmail -bs',
  
  ];
  </code></pre>
  <p>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.</p>
  <p>Any suggestions would be highly appreciated.</p>