microsoft-graph-api - Microsoft Graph - 使用 sendMail API 时电子邮件传送失败

Question

我遇到了 https://graph.microsoft.com/v1.0/users/ 的问题<用户 ID>/sendMail。

我收到 202 Accepted 作为响应，但是当我浏览到上面的用户邮箱时，我收到如下的传递失败通知:

Delivery has failed to these recipients or groups:

<username>@outlook.com
Your message wasn't delivered because the recipient's email provider rejected it.

Remote Server returned '550 5.7.708 Service unavailable. Access denied, traffic not accepted from this IP. For more information please go to http://go.microsoft.com/fwlink/?LinkId=526653 AS(7171) [SYBPR01MB4428.ausprd01.prod.outlook.com]'

当我登录 Outlook 并从 的 Outlook 向 @outlook.com 发送电子邮件时，电子邮件已成功发送。

有谁知道这里发生了什么？

我尝试添加 SMTP 连接器，但没有解决问题。当 SMTP 连接器发送一封电子邮件来测试出站电子邮件时，它工作正常，因为我可以在 <_username_>@outlook.com 收到。 .

Answer 1

如果您关注 link provided ，它解释了正在发生的事情

5.7.708 Access denied, traffic not accepted from this IP

The majority of traffic from this tenant has been detected as suspicious and has resulted in a ban on sending ability for the tenant.

Ensure that any compromises or open relays have been resolved, and then contact support through your regular channel.

For more information, see Fix email delivery issues for error codes 5.7.700 through 5.7.750 in Exchange Online.