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SMTP Error (-1): Connection to server failed

Discussion in 'E-mail Discussions' started by Galvin, Oct 4, 2011.

  1. Galvin

    Galvin Member

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    Hello Guys,

    When I sending an email from roundcube mail client, I am getting "SMTP Error (-1): Connection to server failed" this error. please How to resolve this error.
     
  2. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello :)

    Are other webmail applications affected with similar symptoms where users cannot send, via Horde and SquirrelMail, or is the issue experienced only when attempting to send via RoundCube?

    Thank you.
     
  3. cPanelTristan

    cPanelTristan Quality Assurance Analyst
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    This error is typically seen due to a setting in the CSF firewall or another firewall. It might be caused by having the following set:

    You would need to change SMTP_ALLOWLOCAL to 1 to enable webmail to function.

    If that does not end up being the issue, try disabling the firewall to see the results. If it works, I would then suggest going to CSF forum to ask about what might be the cause. That forum is at the following location:

    CSF Forum
     
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