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System can't send test-email over SMTP/TLS RRS feed

  • Question

  • Dear all exchange experts,

    Our QDAS system used to send email over 25 annoymous. Currently we have to disable annoymous authentication, instead we decide to send email over  587/TLS, so we create receive connector as below:

    however, it does not work when test sending email in QDAS system configuration page:

    The email account used is an email user without issue. the log in smtpreceive folder saying:

    *,None,Set Session Permissions
    >,"220 CN-BJI-EXCHP02.Geely.Auto Microsoft ESMTP MAIL Service ready at Mon, 15 Jul 2019 13:26:13 +0800",
    <,EHLO PCName,
    *,None,Set Session Permissions
    >,250-CN-BJI-EXCHP02.Geely.Auto Hello [10.57.101.133],
    >,250-SIZE 57671680,
    >,250-PIPELINING,
    >,250-DSN,
    >,250-ENHANCEDSTATUSCODES,
    >,250-STARTTLS,
    >,250-AUTH GSSAPI NTLM,
    >,250-8BITMIME,
    >,250-BINARYMIME,
    >,250 CHUNKING,
    <,RSET,
    *,Tarpit for '0.00:00:05',
    >,250 2.0.0 Resetting,
    <,MAIL FROM: <user.qdas@domain.com>,
    *,Tarpit for '0.00:00:05' due to '530 5.7.1 Client was not authenticated',

    It's saying Client was not authenticated. But the account username and password should be correct

    What can be the issue here and how to track?

    Thanks in advance


    Monday, July 15, 2019 7:59 AM

All replies

  • Hi,

    Telnet can only send email from 25 port which is anonymous. When you use 587 port you should "Send-MailMessage" command which could entry account and password.

    This blog could help you configure External SMTP Relay Using Authentication.

    Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.

    Regards,

    Kyle Xu


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Click here to learn more. Visit the dedicated forum to share, explore and talk to experts about Microsoft Teams.

    Tuesday, July 16, 2019 2:48 AM
    Moderator
  • Hi,

    I am writing here to confirm with you how thing going now?

    If the above suggestion helps, please be free to mark it as an answer for helping more people.

    Regards,

    Kyle Xu


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Thursday, July 18, 2019 8:16 AM
    Moderator