求救邮件问题.

Question

服务器是2000 内网建站，申请的域名解析
kingwd.cn 解析服务器为:dhserver.haolan.com.cn 现在只能接受外部邮件，不能发向 外部

请那位大哥 给说明一下 详细的设置步骤，万分感谢
2005-04-12 17:16:33 Router: Unable to obtain Internet host and domain names
2005-04-12 17:16:33 Mail Router started for domain KINGWD
2005-04-12 17:16:33 Router: Internet SMTP host recbok in domain
2005-04-12 17:16:45 Router: No messages transferred to SINA.COM (host sinamx.sina.com.cn) via SMTP: Remote system no longer responding
2005-04-12 17:16:49 Router: Failed to connect to SMTP host SINA.COM because Remote system no longer responding
2005-04-12 17:17:14 Router: No messages transferred to 163.COM (host mx.mail.163.COM) via SMTP: SMTP Protocol Returned a Permanent Error
2005-04-12 17:17:19 Router: Failed to connect to SMTP host 163.COM because 221 Bye