issue with sending email in outlook giving following error code : cf24

Anonymous
2024-02-17T12:01:06+00:00

bonjour,

Technical details

SmtpSubmissionPermanent5XXException: Smtp submission failed. Server 'smtp.hostinger.com' Port '465'. --> Unexpected SMTP server response. Expected: 235, actual: 535, whole response: 535 5.7.8 Error: authentication failed: UGFzc3dvcmQ6

Failure code: cf24

Outlook | Windows | New Outlook for Windows | For business

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.

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  1. Anonymous
    2024-02-26T18:53:32+00:00

    Has anyone reached out to Microsoft to tell them about this obvious glitch in their system?

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  2. Anonymous
    2024-02-26T18:46:10+00:00

    Hello Mohammed EL BERRAH,

    Good day! Thank you for reaching out.

    I'm sorry to hear that you're experiencing issues with sending emails in Outlook. Please let me know of the following to better assist. Thanks in advance.

    1. What is the type of account you are using? Is it an MN3656 work/school account or a Microsoft/personal account like Gmail/Hotmail/outlook.com?
    2. Is this happening to all emails or to specific senders?

    In the meantime, please verify whether you can successfully send emails when you log into outlook on the web. This will; help narrow down if the issue is with the app or the account itself.

    Also, if you are using an IMAP account and you have recently changed my email password, please update your email account password via the Outlook Account screen. You can also try to remove and re-add the account again.

    Looking forward to your response.

    Best Regards,

    Ashraf.

    Same code here.

    It happens in New Outlook on ALL emails sent, not in Outlook. Removed and added acc. but no changes

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  3. Anonymous
    2024-02-26T04:55:06+00:00

    Same problem here. I've been trying to fix it for four days now. It was working fine no problems for a while then all of a sudden it stopped working Failure code: cf24. THIS SUCKS. I dont want to use gmail interface or apple mail.

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  4. Anonymous
    2024-02-26T04:12:35+00:00

    Hello Mohammed EL BERRAH,

    Good day! Thank you for reaching out.

    I'm sorry to hear that you're experiencing issues with sending emails in Outlook. Please let me know of the following to better assist. Thanks in advance.

    1. What is the type of account you are using? Is it an MN3656 work/school account or a Microsoft/personal account like Gmail/Hotmail/outlook.com?
    2. Is this happening to all emails or to specific senders?

    In the meantime, please verify whether you can successfully send emails when you log into outlook on the web. This will; help narrow down if the issue is with the app or the account itself.

    Also, if you are using an IMAP account and you have recently changed my email password, please update your email account password via the Outlook Account screen. You can also try to remove and re-add the account again.

    Looking forward to your response.

    Best Regards,

    Ashraf.

    Same code here.

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  5. Anonymous
    2024-02-23T23:51:07+00:00

    Same issue here, failure code cf24. Nothing changed for me either.

    Jen

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