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2547393 - Error message XS816 'Connection refused' for SMTP messages in SOST

Symptom

  • Messages are trying to be sent using the SMTP protocol from the SAP system.
  • These messages are failing with error message XS816 - Message cannot be transferred to node SMTP due to connection error (final).
  • The long text of the error message shows: Information from external system (if available) Connection refused

    XS816.png

    XS816 1.png


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Environment

  • SAP NetWeaver
  • Release independent

Keywords

SMTP SmtpPlugInGetErrorText: Connection refused(-41), close connection, N.C421.MConnection refused, NIECONN_REFUSED(-10), NIEHOST_UNKNOWN(-2), SMTP, Connection request to partner failed(-20), XS816
Operations team, the above mentioned error is present and further help is needed, open a ticket to XX-HST-OPR-INC. , KBA , BC-SRV-COM , Communication Services: Mail, Fax, SMS, Telephony , Problem

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