SMTP error from remote mail server after RCPT TO:<123@abc.com>
发布时间：2013-11-27 20:02:53
| 错误代码 |
> SMTP error from remote mail server after RCPT TO:<123@abc.com>:
> host mail.abc.com[203.124.10.111]:
> 421 Refused. The domain of your sender address has no mail exchanger (MX).:
>retry timeout exceeded |
| 形成原因 | 由于收信方检测发信方的域名MX解析失败，超时而无法完成投递 |
| 解决办法/流程 | 由于收信方检测发信方的域名MX解析失败，超时而无法完成投递，这是收信方的一个检测机制，收信方认为发信方域名没有做MX记录，因此拒收邮件。建议发信方尽快做好DNS解析，谢谢！ |
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