SAP Knowledge Base Article - Preview

1950670 - Error XS856 "No delivery to &1, authentication required" occurs while sending mails through SMTP node

Symptom

While sending mails from an SAP system through SMTP node, following error occurs in transaction SOST:

No delivery to &1, authentication required
XS856

XS856_SOST_1.png

In the long text of the message additional information might be displayed:

530 5.7.1 Client was not authenticated

XS856_long_text_1.png


Read more...

Environment

  • SAP Basis Release 731 and higher
  • SMTP interface

Product

SAP NetWeaver all versions

Keywords

Keine Auslieferung an, Authentifizierung erforderlich, authentication procedure, SMTP PlugInHandleNetData, NTLM#, GSSAPI NTLM LOGIN, LOGIN#, PLAIN, EXTERNAL xs853,xs 853,xs 856 , KBA , BC-SRV-COM , Communication Services: Mail, Fax, SMS, Telephony , BC-SRV-COM-INT , Obsolete. Please use BC-SRV-COM , Problem

About this page

This is a preview of a SAP Knowledge Base Article. Click more to access the full version on SAP for Me (Login required).

Search for additional results

Visit SAP Support Portal's SAP Notes and KBA Search.