SAP Knowledge Base Article - Preview

3353164 - '535 5.7.139 Authentication unsuccessful' error when connecting Cloud Integration to SMTP


When connecting the Cloud Integration to SMTP server, the following error occurs:

  • 535 5.7.139 Authentication unsuccessful, the request did not meet the criteria to be authenticated successfully



  • SAP Business Technology Platform
  • SAP Integration Suite
  • Cloud Integration


Cloud Integration all versions ; SAP Integration Suite all versions


Cloud Integration, SAP Integration Suite, SAP Cloud Platform Integration, Cloud Platform Integration, SAP CPI, CPI, SCPI, HANA Cloud Integration, HCI, SAP HCI, tenant, iFlow, Integration Flow, Mail, gmail, outlook, server, smtp, fail, failed , KBA , LOD-HCI-PI-GB , Generation & Build Framework , 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.