邮件云推送平台SMTP设置
各大邮件云推送平台都支持STMP方式发送，因此可以像添加普通发件箱一样添加到伯勒邮件群发机中来发送邮件。使用软件发送的好处是可以实现更复杂的 […]
550 Sender has no A, AAAA, or MX DNS records
退信内容：550 Sender has no A, AAAA, or MX DNS records 退信原因：发信人域名没有A和MX记录等导
550 Sender has no A, AAAA, or MX DNS records 查看全文
550 Relaying mail to [email protected] is not allowed
550 Relaying mail to [email protected] is not allowed 退信原因：对方邮箱不存在。
550 Relaying mail to [email protected] is not allowed 查看全文
554 mail server permanently rejected message (#5.3.0)
554 mail server permanently rejected message (#5.3.0) 退信原因：被对方服务器认定为垃圾
554 mail server permanently rejected message (#5.3.0) 查看全文
552 Sorry, your host is blocked by spam detection system
退信内容：552 Sorry, your host is blocked by spam detection system 退信原因：被对方
552 Sorry, your host is blocked by spam detection system 查看全文
554 5.7.1 Client host rejected: Access denied
554 5.7.1 Client host rejected: Access denied 退信原因：出现这个退信，需要具体分析，一般有下面
554 5.7.1 Client host rejected: Access denied 查看全文
451 Failed to store message for
451 Failed to store message for 退信原因：远程服务器写入邮件失败 解决方案：这个问题，不是发送方的问题，是邮
451 Failed to store message for 查看全文