Mail delivery failed

Question

Good afternoon

emails sent from a group email which are sent on to me (my personal outlook.com email) show up by the sender from the group email as Mail delivery failed. In general sometimes this happens to me - people send me personal emails, I receive the email but they get a mail delivery failed email.

Where is the problem or what do I need to look at to find out what the issue is?

many thanks

Rachel

Answer 1

Here is the NDR:

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of
its recipients. This is a permanent error.

The following address failed:

.....@outlook.com:
SMTP error from remote server for MAIL FROM command, host: outlook-com.olc.protection.outlook.com (104.47.58.33) reason: 550 5.7.1 Service unavailable, Client host [82.165.159.10] blocked using S
pamhaus. To request removal from this list see ............
g/query/ip/82.165.159.10 (AS3130). [DM6NAM10FT047.eop-nam10.prod.prote
ction.outlook.com]

--- The header of the original message is following. ---

Received: from [212.227.15.41] ([212.227.15.41]) by mx.kundenserver.de
 (mxeue010 [212.227.15.41]) with ESMTP (Nemesis) id 1MMW5X-1ngPLC3ZaR-00JdSj
 for <.....................>; Sat, 26 Feb 2022 12:30:42 +0100
Received: from 66.240.69.34.bc.googleusercontent.com ([34.69.240.66]) by
 mx.kundenserver.de (mxeue010 [212.227.15.41]) with ESMTP (Nemesis) id
 1MMF6c-1ng8MJ3ZO2-00JMTo for <.....................>; Sat, 26 Feb 2022 12:30:41
 +0100
X-LinkedIn-Id: c89eb22666fd23d64cb
Feedback-ID: email_notification_single_search_appearance_03:linkedin
MIME-Version: 1.0
Interdependent-Cycled: 87d23bea6b
List-Unsubscribe: <..................
Date: Sat, 26 Feb 2022 11:30:42 +0000 (UTC)
X-LinkedIn-fbl: cbb5c47ab7f958e7eae57dbd5ae1c2a4ca96f654dde9f29d7278cc6575a7366d
Content-Transfer-Encoding: base64
Message-ID: <>
Content-ID: html-body
Subject: You appeared in 3 searches this week
X-LinkedIn-Class: EMAIL-DEFAULT
Appease-Originators-Lexicographically: 99d1dd9e364ae2c
From: LinkedIn <>
To: ".........@...............de" <.....@................de>
X-LinkedIn-Template: email_notification_single_search_appearance_03
Require-Recipient-Valid-Since: .....@........................de; Sat, 26 Feb 2022 11:30:42 +0000
Content-Type: text/html; charset=UTF-8
X-Spam-Flag: YES
X-UI-Out-Filterresults: junk:.....................

Answer 2

Hi, RJW7769

According to your description, the issue of your concern that the Mail delivery failed from the group email to a personal email.

Please be kindly to understand that there're many possibilities that can cause the Mail delivery failed - NDR.

We would highly appreciated it if you can capture the NDR as a screenshot to us for further troubleshooting.

Please feel free to contact us if there's an update.

Kind Regards,

Zed