private function EmailVerifyManager::connect in Email Verify 8.2

2 calls to EmailVerifyManager::connect()

EmailVerifyManager::checkEmail in src/EmailVerifyManager.php

EmailVerifyManager::checkHost in src/EmailVerifyManager.php

File

src/EmailVerifyManager.php, line 176

Contains \Drupal\email_verify\EmailVerifyManager.

Class

EmailVerifyManager

Defines an email verify manager.

Namespace

Drupal\email_verify

Code

private function connect($host) {
  if ($this->connection) {
    return true;
  }

  // Find the MX records for the host. When there are no MX records, the host
  // itself should be used.
  $mx_hosts = array();
  if (!getmxrr($host, $mx_hosts)) {
    $mx_hosts[] = $host;
  }
  $config = $this->configFactory
    ->get('email_verify.settings');
  $timeout = $config
    ->get('timeout');

  // Try to connect to each MX host using SMTP port 25 in turn.
  foreach ($mx_hosts as $smtp) {
    $this->connection = @fsockopen($smtp, 25, $errno, $errstr, $timeout);

    // Try each MX host sequentially if there is no response.
    if (!$this->connection) {
      continue;
    }

    // Successful SMTP connections break out of the loop.
    if (preg_match("/^220/", $out = fgets($this->connection, 1024))) {
      return true;
    }
    else {

      // The SMTP server is probably a dynamic or residential IP. Since a
      // valid domain has been used, accept the address.
      \Drupal::logger('email_verify')
        ->warning('Could not verify email address at host @host: @out', array(
        '@host' => $host,
        '@out' => $out,
      ));
    }
  }
}