config.inc.php.dist

<?php
/* Password encryption:
    'rcmail': encrypt passwords by default Roundcube methods.
    'secure': must re-enter passwords if changed via other means
*/
$config['additional_smtp_crypt'] = 'rcmail';

/* password encryption salt (only used for secure encryption) */
// $config['additional_smtp_salt'] = 'Utilizes RC Default des_key generated at installation';

/* predefined smtp hosts (associated with the domain part of the identity email property) */
$config['additional_smtp_external'] = array(
  'gmail.com' => array(
    'host' =>'ssl://smtp.gmail.com:465',
    'no_save_sent_messages' => true, // Google stores sent mail in user mailbox
    'readonly' => true, // This prevents field editing & does not make your remote email "Read Only"
  ),
  'googlemail.com' => array(
    'host' =>'ssl://smtp.gmail.com:465',
    'no_save_sent_messages' => true, // Google stores sent mail in user mailbox
    'readonly' => true, // This prevents field editing & does not make your remote email "Read Only"
  ),
  'yahoo.com' => array(
    'host' =>'ssl://smtp.mail.yahoo.com:465',
    'no_save_sent_messages' => true, // Yahoo stores sent mail in user mailbox
    'readonly' => true, // This prevents field editing & does not make your remote email "Read Only"
  ),
  'hotmail.com' => array(
    'host' =>'ssl://smtp.live.com:587',
    'no_save_sent_messages' => true,
    'readonly' => true, // This prevents field editing & does not make your remote email "Read Only"
  ),
  'live.com' => array(
    'host' =>'ssl://smtp.live.com:587',
    'no_save_sent_messages' => true,
    'readonly' => true, // This prevents field editing & does not make your remote email "Read Only"
  ),
  'outlook.com' => array(
    'host' =>'ssl://smtp-mail.outlook.com:587',
    'no_save_sent_messages' => true,
    'readonly' => true, // This prevents field editing & does not make your remote email "Read Only"
  ),
  'aol.com' => array(
    'host' =>'ssl://smtp.aol.com:465',
    'no_save_sent_messages' => true,
    'readonly' => true, // This prevents field editing & does not make your remote email "Read Only"
  ),
  'gmx.com' => array(
    'host' =>'ssl://mail.gmx.com:587',
    'no_save_sent_messages' => true,
    'readonly' => true, // This prevents field editing & does not make your remote email "Read Only"
  ),
  'icloud.com' => array(
    'host' =>'ssl://smtp.mail.me.com:587',
    'no_save_sent_messages' => true,
    'readonly' => true, // This prevents field editing & does not make your remote email "Read Only"
  ),
  'yandex.com' => array(
    'host' =>'ssl://smtp.yandex.com:465',
    'no_save_sent_messages' => true,
    'readonly' => true, // This prevents field editing & does not make your remote email "Read Only"
  ),
  'freenet.de' => array(
    'host' =>'mx.freenet.de',
    'no_save_sent_messages' => false,
    'readonly' => false, // This prevents field editing & does not make your remote email "Read Only"
  ),
);

/* local smtp hosts (associated with the domain part of identitiy email property) */
$config['additional_smtp_internal'] = array(
  'mydomain1.tld' => array(
    'host' => 'smtp.mydomain1.tld',
    'smtp_user' => '%u',
    'smtp_pass' => '%p',
    'smtp_helo_host' => 'smtp.mydomain1.tld',
    'smtp_auth_type' => '',
    'no_save_sent_messages' => false,
    'readonly' => true,
  ),
  'mydomain2.tld' => array(
    'host' => 'ssl://smtp.mydomain2.tld:465',
    'smtp_user' => '%u',
    'smtp_pass' => '%p',
    'smtp_helo_host' => 'smtp.mydomain2.tld',
    'smtp_auth_type' => '',
    'no_save_sent_messages' => false,
    'readonly' => false,
  ),
);

/* auto-detect SMTP server */
$config['additional_smtp_autodetect'] = false;
?>