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2774366 - Error message XS816 'Unknown hostname' for SMTP messages in SOST

Symptom

  • You are attempting to send messages using the STMP 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).

    xs816-1.PNG

  • The long text of the error message shows: Information from external system (if available) Unknown hostname.

    xs816-2-1.png

  • And in dev_icm trace level 3 shows:

    xs816-3.PNG

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Environment

All Release

Product

SAP ERP 6.0 ; SAP NetWeaver 2004 ; SAP NetWeaver 7.0 ; SAP NetWeaver 7.1 ; SAP NetWeaver 7.2 ; SAP NetWeaver 7.3 ; SAP NetWeaver 7.4 ; SAP NetWeaver 7.5 ; SAP enhancement package 1 for SAP NetWeaver 7.0 ; SAP enhancement package 1 for SAP NetWeaver 7.3 ; SAP enhancement package 2 for SAP NetWeaver 7.0 ; SAP enhancement package 3 for SAP NetWeaver 7.0

Keywords

XS816, Message cannot be transferred to node SMTP due to connection error (final), Unknown hostname , KBA , BC-SRV-COM , Communication Services: Mail, Fax, SMS, Telephony , Problem

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