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3CX SMTP server returns: AthenticationInvalidCredentials: 5.7.0 Denied error

Discussion in '3CX Phone System - General' started by sip.bg, Feb 19, 2018.

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  1. sip.bg

    sip.bg Active Member

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    Newly installed 3CX standard instance.
    Testing email server returns: AthenticationInvalidCredentials: 5.7.0 Denied error.

    Any clue ?
     
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  2. YiannisH_3CX

    YiannisH_3CX Support Team
    Staff Member 3CX Support

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    Hello @sip.bg

    This is caused when the system was is authenticating to the ERP with one public IP and the SMTP request comes from a different public IP address. If the system is set to static public IP the switch it to dynamic and restart services. Wait for a bit and then try the test again. If this fails then send me a personal message with your licence key so i can look into the issue
     
  3. sip.bg

    sip.bg Active Member

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    Hi Yiannis,
    thanks for reply, I forwarded your answer to customer and I'm awaiting his response.
     
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