outlook mail

29976883 0 Reputation points
Delivery has failed to these recipients or groups:

This message couldn't be delivered because the sending email address was not recognized as a valid sender. The most common reason for this error is that the email address is, or was, suspected of sending spam. Contact the organization's email admin for help and give them this error message.

Diagnostic information for administrators:

Generating server: MA1PR01MB2953.INDPRD01.PROD.OUTLOOK.COM

Remote server returned '550 5.1.8 Access denied, bad outbound sender AS(42004)'

Original message headers:

Received: from MA1PR01MB2953.INDPRD01.PROD.OUTLOOK.COM
 ([fe80::dea6:149d:768d:3d4f]) by MA1PR01MB2953.INDPRD01.PROD.OUTLOOK.COM
 ([fe80::dea6:149d:768d:3d4f%3]) with mapi id 15.20.6156.014; Sun, 26 Feb 2023
 20:20:44 +0000
MIME-Version: 1.0
Content-Type: text/plain
Date: Sun, 26 Feb 2023 20:20:44 +0000
Subject: test
A family of Microsoft email and calendar products.
3,115 questions
Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
4,945 questions
{count} votes

1 answer

Sort by: Most helpful
  1. ChristyZhang-MSFT 21,181 Reputation points Microsoft Vendor

    Hi @29976883 ,

    Welcome to our forum!

    Are you using a Microsoft 365 account?

    If so, as i know, If a user exceeds one of the outbound sending limits as specified in the service limits or in outbound spam policies, the user is restricted from sending email, but they can still receive email. You can contact admin to remove users from the Restricted users page in the Microsoft 365 Defender or in Exchange Online PowerShell. More information:

    Remove blocked users from the Restricted users portal in Microsoft 365

    In addition, i noticed that you added some personal information to the post, so I hid them. To avoid your privacy, please remember to hide your personal information in your replies.

    Hope to help you!

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

    0 comments No comments