How to fix mails sending?

Arbnor Nikaj 0 Reputation points
2024-10-28T09:39:16.7533333+00:00

I have problems sending mails. Its showing me ''This message couldn't be delivered because the sending email address was not recognized as a valid sender.''

Outlook
Outlook
A family of Microsoft email and calendar products.
4,053 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.
5,293 questions
Microsoft Configuration Manager
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2 answers

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  1. NoOneCan 490 Reputation points
    2024-10-28T10:22:10.8+00:00

    Are you admin or end user?

    If you are an end user contact your admin for further help. For an admin refer to the article: https://learn.microsoft.com/en-us/defender-office-365/outbound-spam-restore-restricted-users?view=o365-worldwide

    0 comments No comments

  2. Joan Hua-MSFT 2,790 Reputation points Microsoft Vendor
    2024-10-29T01:56:11.0666667+00:00

    Hi @Arbnor Nikaj

    Welcome to our forum!

    Agree with NoOneCan.

    As i know, the error message you received indicates that your email address is suspected of sending spam and is no longer allowed to send messages outside of your organization.

    In addition, i find a similar thread you may feel free to refer to.User's image

    Hope it helps.


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