MDaemon SMTP sending notification failed

MDaemon SMTP sending notification failed

Hi,
We have MDaemon mail server in our organization and use SDP MSP v10.5.09, but get error "sending notification failed" while send mail.
  1. [11:46:26:102]|[08-06-2020]|[SYSOUT]|[INFO]|[46]: QUIT|
    [11:46:26:118]|[08-06-2020]|[SYSOUT]|[INFO]|[46]: 221 2.0.0 See ya in cyberspace|
    [11:46:26:118]|[08-06-2020]|[SYSERR]|[INFO]|[46]: com.sun.mail.smtp.SMTPSendFailedException: 530 5.7.0 Authentication required

I attached serverout.txt log to see my problem. What should I do? Do you have any best practice for MDaemon server settings?

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