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How do I solve an outgoing server email error?

roy70roy70 Posts: 3 Spectator
edited December 2022 in Spectrum Archives: 2020 - Present Mar 08, 2022

I am an old Charter mail user and all of a sudden both my wife and I couldn't send email. We are getting a error (Outgoing server (SMTP) error. The server responded: cmsmtp xx.xx.xx.xx blocked.)

I have tried disabling my antivirus without any change. Does anyone have a clue how to fix this?


  • James_MJames_M Posts: 3,953 ADMIN
    Mar 08, 2022

    Hi and welcome!

    Are you using an email client? What is the specific error code (usually starts with #AUP). Do you get the same error when using Charter webmail?

  • roy70roy70 Posts: 3 Spectator
    edited March 2022 Mar 08, 2022

    I am using Thunderbird email client.

    The error is: An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: cmsmtp xx.xx.xx.xx blocked. Please see for more information. AUP#Out-1130.

    I do not get the error when I use webmail.

  • James_MJames_M Posts: 3,953 ADMIN
    Mar 08, 2022

    Thanks. AUP errors are Acceptable Use Policy errors. Typically there are related to either emails that have been blocked, identified as sending spam, or have attachments that exceed limits. If it is impacting multiple email addresses, then there may be an issue Thunderbird email. The work around would be to use webmail to avoid the error.

  • roy70roy70 Posts: 3 Spectator
    Mar 08, 2022

    I messed around with my Local Area Connection and the Wifi network settings and I rebooted

    after I lost all connection to Wifi and now I can send emails. If I knew what I did, I could fix my wife's email.

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