我的 Digital Ocean 邮件服务器出现问题。我的邮件服务器在“Mail in a box”应用程序上运行。每次,当我尝试将邮件发送至:[电子邮件受保护]时,我都会得到相同的回复:
Undelivered Mail Returned to Sender
From
[email protected]
This is the mail system at host mail.sporta.io.
I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The mail system
<[email protected]>: host gmail-smtp-in.l.google.com[108.177.126.27]
said: 550-5.7.1 This message does not have authentication information or
fails to pass 550-5.7.1 authentication checks. To best protect our users
from spam, the 550-5.7.1 message has been blocked. Please visit 550-5.7.1
https://support.google.com/mail/answer/81126#authentication for more 550
5.7.1 information. v27si4529334edm.111 - gsmtp (in reply to end of DATA
command)
Reporting-MTA: dns; mail.sporta.io
X-Postfix-Queue-ID: 83217200D6
X-Postfix-Sender: rfc822; [email protected]
Arrival-Date: Fri, 1 Feb 2019 20:27:51 +0100 (CET)
Final-Recipient: rfc822; [email protected]
Original-Recipient: rfc822;[email protected]
Action: failed
Status: 5.7.1
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.7.1 This message does not have authentication
information or fails to pass 550-5.7.1 authentication checks. To best
protect our users from spam, the 550-5.7.1 message has been blocked. Please
visit 550-5.7.1
https://support.google.com/mail/answer/81126#authentication for more 550
5.7.1 information. v27si4529334edm.111 – gsmtp
Subject
test
From
[email protected]
To
[email protected]
Date
Today 21:27
附注我通过其他服务检查了我的服务器(向 mail.io、mail.com、mail.ru 发送消息) 它工作正常。我可以毫无问题地向此服务发送邮件,但 gmail 继续阻止我的邮件。我需要什么来解决这个问题?
成功发送邮件至mail.com、mail.ru
从 Gmail 接收我的消息
在 Gmail 中注册发送电子邮件地址并等待其通过身份验证。 Gmail 仅接受来自 Gmail 地址或已知与 Gmail 帐户关联的地址的邮件。
正如 Juan 在他的回复中提到的这里,您可能需要添加所需的 DNS TXT 记录。或者,您可以查看 Google Postmaster Tools。它可能会对当前的问题有所启发。
未经身份验证的电子邮件通常会被拒绝或标记为垃圾邮件,以保护收件人免受网络钓鱼诈骗。出于安全原因,未经身份验证的带有附件的电子邮件可能会被完全拒绝。
为了确保 Gmail 可以对您进行身份验证:
从同一IP地址发送
保留指向您域的 IP 地址的有效反向 DNS 记录
在“发件人:”标头中为每条批量消息选择相同的地址
对于
mail.sporta.io
反向 DNS 解析 - 未找到 PTR 记录。
对于
dmarc:sporta.io
未找到 DNS 记录。
对于
spf:sporta.io
未找到 DNS 记录。