VestaCP中roundcube的SMTP配置方法
指尖风暴 Roundcube是支持SMTP，只是使用了Webmail后，默认关闭了而已，我们只需要自己打开即可， 打开的方法很简单。
修改配置文件：/etc/roundcubemail/main.inc.php
修改SMTP相关信息如下
[code lang="php"]
// ----------------------------------
// SMTP
// ----------------------------------
// SMTP server host (for sending mails).
// To use SSL/TLS connection, enter hostname with prefix ssl:// or tls://
// If left blank, the PHP mail() function is used
// Supported replacement variables:
// %h - user's IMAP hostname
// %n - http hostname ($_SERVER['SERVER_NAME'])
// %d - domain (http hostname without the first part)
// %z - IMAP domain (IMAP hostname without the first part)
// For example %n = mail.domain.tld, %d = domain.tld
$rcmail_config['smtp_server'] = '%d';
// SMTP port (default is 25; use 587 for STARTTLS or 465 for the
// deprecated SSL over SMTP (aka SMTPS))
$rcmail_config['smtp_port'] = 25;
// SMTP username (if required) if you use %u as the username Roundcube
// will use the current username for login
$rcmail_config['smtp_user'] = '%u';
// SMTP password (if required) if you use %p as the password Roundcube
// will use the current user's password for login
$rcmail_config['smtp_pass'] = '%p';
// SMTP AUTH type (DIGEST-MD5, CRAM-MD5, LOGIN, PLAIN or empty to use
// best server supported one)
$rcmail_config['smtp_auth_type'] = 'LOGIN';
// Optional SMTP authentication identifier to be used as authorization proxy
$rcmail_config['smtp_auth_cid'] = null;
// Optional SMTP authentication password to be used for smtp_auth_cid
$rcmail_config['smtp_auth_pw'] = null;
// SMTP HELO host
// Hostname to give to the remote server for SMTP 'HELO' or 'EHLO' messages
// Leave this blank and you will get the server variable 'server_name' or
// localhost if that isn't defined.
$rcmail_config['smtp_helo_host'] = 'HELO';
// SMTP connection timeout, in seconds. Default: 0 (no limit)
$rcmail_config['smtp_timeout'] = 0;
[/code]
