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2593171 - Error XS806 "No delivery to ..., invalid recipient address" with long text message "550 5.7.1 Unable to relay" occurs while sending mail through SMTP


Following error occurs while sending mail via SMTP node in SAPconnect:
XS806 "No delivery to ..., invalid recipient address"

And the long text of the message contains following information:
550 5.7.1 Unable to relay



  • SAP Basis Release 610 and higher
  • SAPconnect
  • SMTP interface 


SAP NetWeaver all versions


XS806, SCOT, 550 5.7.1, Unable to relay , KBA , BC-SRV-COM , Communication Services: Mail, Fax, SMS, Telephony , Problem

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