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Hi i am not able to send emails, it is saying the below. What can i do to resolve?
Your message couldn't be delivered because you weren't recognized as a valid sender. The most common reason for this is that your email address is suspected of sending spam and it's no longer allowed to send email. Contact your email admin for assistance.
Diagnostic information for administrators:
Generating server: CWXP265MB2325.GBRP265.PROD.OUTLOOK.COM
Remote Server returned '550 5.1.8 Access denied, bad outbound sender AS(42004)'
Original message headers:
Received: from CWXP265MB2325.GBRP265.PROD.OUTLOOK.COM
([fe80::fdcf:2227:98b6:a582]) by CWXP265MB2325.GBRP265.PROD.OUTLOOK.COM
([fe80::fdcf:2227:98b6:a582%3]) with mapi id --.--.--.--; Tue, 21 Jun 2022
13:19:16 +0000
MIME-Version: 1.0
Content-Type: text/plain
Date: Tue, 21 Jun 2022 13:19:16 +0000
Message-ID:
<CWXP*******@CWXP265MB2325.GBRP265.PROD.OUTLOOK.COM>
Subject: Re: Joiners
Using Classic Outlook on Windows for personal email, calendar, and contact management
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Dear Emily Lanyon,
Hope everything goes well with you! If you need further help, please feel free to contact me.
Sincerely,
Etta Ma MSFT | Microsoft Community Moderator
Dear Emily Lanyon,
Good day to you and thank you for posting to Microsoft Community.
According to the error code in non-delivery report, it seems you’re blocked to send emails in organization. Please contact your organization admin, let him sign in Microsoft 365 Defender portal at https://security.microsoft.com/restrictedusers to check if your account is listed there and unblock your account. After done, you may need to wait for a while (within a few hours) before sending email.
Here’s for your reference: Fix email delivery issues for error code 5.1.8 in Exchange Online
If you have query, please feel free to contact me. We look forward to your reply.
Sincerely,
Etta Ma MSFT | Microsoft Community Moderator
***Note: In the event that you're unable to reply to this thread, please ensure that your Email address is verified in the Community Website by clicking on Your Account Name > "My Profile" > "Edit Profile" > Add your Email Address > tick "Receive email notifications" checkbox > click on "Save”. ***