In this article, we will describe some of the possible causes that can cause SMTP error 550 0x800ccc79, and then we will describe some of the ways to fix this problem.


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    g.If a user receives a new 550 Relay Illegal error, it means they are not authorized to route email through the server they are trying to send this email from. Typically, when users send their email from their Internet Service Provider (ISP) mail servers, they do not need authentication.




    Windows Live Mail is the last Microsoft email client to be discontinued. Microsoft ditched it in favor of a separate Windows mail. Beginning in 2016, Microsoft closed its services to non-email app clients because Windows 10 users receive Windows Mail on their valuable operating system. The app started to complain about users, and in 2013, many users found that deleted emails continued to come back in the form of inboxes.

    Now users who usually use Windows or 8 7 love to use Windows Live Mail because it is free to download. However, afterAs Microsoft has clearly discontinued its services, you generally do not receive professional help from the Microsoft support team.

    We’ll specifically discuss a recurring error that several users are complaining about: Windows Live Mail Error ID 0x800CCC79.

    Windows Live Mail Error 0x800CCC79

    This message usually appears when you, as a Windows Live Mail user, want to send a message to a specific recipient. But instead of sending most of the messages to the user, this personal error message is displayed:

    The message could not be sent because one of the recipients was rejected by the server. The rejected email address was considered “[email protected]”. Subject “****”, Account: “”, Server: “”, Protocol: SMTP, Reply: Web Server “550 Relay not authorized”, Port: 465, Secure (SSL): Yes, Server Error: 550, Error Number: 0x800CCC79

    smtp error 550 0x800ccc79

    Another kind of form associated with error 0x800ccc79 is that every user tries to log in or initialize in Windows Live Mail. In this case, an error message related to the corner of the screen appears and disappears automatically.t after a while. Although the message disappears completely, it is annoying every time users think about practicing Windows Live Mail.

    Solutions to Fix Windows Live Mail Error 0x800CCC79

    We can offer manual solutions according to the above error.

    • If an error message appears when trying to send an email, then the message itself indicates this reason:

      Usually, the message cannot be sent because one of the recipients rejected by the server was rejected. The email address was “[email protected]”. Subject “****”, Account: “”, Server: “”, Protocol: SMTP, Reply: Server “550 Relay less than allowed” ™, Port: 465, Security (SSL): Yes, Server Error: 550, Error Number: 0x800CCC79.


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      The server does not allow message delivery to which phone. This means that there is a problem with the server settings. This is another smtp error. You can disable SMTP checking here. To fix this method, follow these steps.

      1. Open this Live Mail application on Windows.
      2. Select an account, clicke right-click it and select “Properties.”
      3. Go to the Servers tab to help you and switch to the outgoing server option.
      4. Check the box next to “My outgoing mail server can be authenticated” and click OK.
      5. Now close Windows Live Mail and reactivate it.
      6. Try sending the email again and see if the error occurs again.
    • If an error message appears when trying to connect to a situational application
      this usually happens when there is an email in the outgoing mailbox filewith problems. Here are the steps to restore it.
      1. Sign in to your Windows Live application mailbox.
      2. Once the error is gone, go to File >> Work Offline to link. This would be an app in terms of offline mode.
      3. Now normally navigate to the outbox folder, select the email message in it, right-click and select the Delete option to delete it.
      4. Track file >> Disable offline again to disable status also ingeneralized mode.
      5. Close the application and restart the current system.
      6. Now check if the error appears when starting the Windows Live Mail application. Products

      These are our free business services that you can manually use to keep Windows Live Mail running smoothly.

    Do you want to close the Windows Live Mail required for Outlook?

    If you are planning to close Windows Live Mail naturally because it is definitely not a promising and reliable email client for you, then we think so. You are switching from Windows Live Mail to Outlook email client. Microsoft even added Windows Live To Mail Focus to Outlook, a high-quality email client.

    When exporting email messages triggered by Windows Live Mail to Outlook, it is almost certainly important that you move all of your data as well. And the best migration solution is to use a real professional EML to PST conversion tool that can move your important emails from Outlook EML files to PST file format so that someone can use it in your new email client. ANDThe Kernel to Eml PST Converter tool easily moves EML / EMLX files to activate in Outlook PST and other image formats.

    smtp error 550 0x800ccc79

    This allows you to export multiple files together or selectively. You can also use this tool to convert EML files directly to MSG format as well as transfer them to the Office 365 cloud. The user interface is definitely very user-friendly, which you can confirm by working on the free demo. We wish you a successful migration from Windows Live Mail to Outlook!


    Windows Live Mail application error with ID 0x800CCC79 can often be fixed with manual solutions, but migrating Windows Live Mail to Outlook is the main option. Therefore, users are advised a safe and reliable tool to convert EML to PST.



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    Check mailing addresses for typos.Make sure the IP address of the email is blacklisted.After a while, try to figure out how to send an email.Try updating your outgoing mail port.Check occasionally if IP filtering is enabled.Enable SMTP Authentication.Troubleshoot SSL method.Contact someone’s internet service provider.

    Check out our visual, step-by-step troubleshooting guide for your specific email client.Follow these special settings to access the outgoing SMTP server.Select the option to request certification with a password.Use the same Dieter name and password for a specific incoming server and Outgoing mail.

    The error “550 Authentication Required for Relay Support” indicates that your email hosting requires SMTP authentication to send outgoing emails, but the email client used to send emails was not authenticated with your username and password … Fortunately, our mistake can be fixed quickly and easily.