outlook Issue

Question

Dear Team,

I am inform to you if I'm send any mail so my mail not send after 5-10 second my mail notify underlever

Delivery has failed to these recipients or groups:

aayush@....
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: PN2PR01MB7963.INDPRD01.PROD.OUTLOOK.COM

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

Original message headers:

Received: from PN2PR01MB7963.INDPRD01.PROD.OUTLOOK.COM

([fe80::481f:2cdb:8ca9:1781]) by PN2PR01MB7963.INDPRD01.PROD.OUTLOOK.COM

([fe80::481f:2cdb:8ca9:1781%4]) with mapi id 15.20.7633.036; Mon, 10 Jun 2024

05:44:13 +0000

MIME-Version: 1.0

Content-Type: text/plain

Date: Mon, 10 Jun 2024 05:44:13 +0000

Message-ID:

        <___@___.___>

Subject:

(Please Look At This Matter And Resolve Please As Soon As Possible Mail ID-sales1@....)

Answer 1

Hello Veer Gautam,

Good day to you and hope you are doing well. We would like to follow this so want to quickly check, have you checked Eleni's response? Feel free if you need further assistance, we will be happy to assist you further. Thank you for your time and cooperation.SincerelySimbarashe | Community Moderator

Answer 2

Hello Veer Gautam,

Good day to you and I hope you are doing well.

We haven't heard back from you, so want to quickly check, have you checked my response? Feel free if you need further assistance, we will be happy to assist you. If the reply addressed solved your issue, you can also submit your vote below the reply so that it is pinned at the top and other community users can easily find this thread. You will have helped many of them in case they have a similar query. Thank you for your time and cooperation.

Best regards,

Eleni | Microsoft Community Moderator

Answer 3

Hi Veer Gautam,

Good day.

Thank you for posting to the Microsoft Community. We are glad to assist.

It seems like your email address has been flagged as a bad outbound sender and is being denied by the recipient’s server due to a suspicion of spam activity. This can happen for various reasons, such as sending too many emails in a short period, your email content appearing spammy, or your email address being compromised and used for spamming without your knowledge.

If you're a user, follow these steps:

1. Determine whether your account is compromised.
2. If your account is compromised, follow the steps in Respond to a compromised email account in Exchange Online.
3. Ask your administrator to unblock your account so that you can send an email.

If you're an email admin, you can unblock user accounts on the Restricted Entities page in the Microsoft 365 Defender portal. After you unblock a user account, all restrictions are usually removed within one hour.

For more information, see Remove blocked users from the Restricted Entities page. To help prevent future account compromises, follow the recommendations in the Top 10 Ways to secure your business data.

For reference please see NDR error code 550 5.1.8 (Access denied, bad outbound sender) - Exchange | Microsoft Learn

We are looking forward to your response! Thanks for your precious time. Have a nice day!

Best Regards

Community Moderator