2445621 - PI Mail Adapter - Client was not authenticated error

• You are attempting to configure a Mail Receiver Adapter in Process Integration (PI) or Process Orchestration (PO) with SMTP
• The mail server you are connecting to e.g. Office365, requires TLS authentication
• Using the XPI Inspector tracing tool, with Example 50 or Example 11, you can collect the full error information
• The error below occurs:
  Unable to call the caller service :
  [EXCEPTION]
  Failed to call the endpoint ; nested exception caused by:
  MAIL_SNT_FAILjava.io.IOException: server not responding OK to MAIL FROM; 530 5.7.57 SMTP; Client was not authenticated to send anonymous mail during MAIL FROM 
  Message processing failed. Cause: com.sap.aii.af.sdk.xi.srt.BubbleException: Failed to call the endpoint [null "null"]; nested exception caused by: iaik.security.ssl.SSLException: Invalid SSL message, peer seems to be talking plain! 
  MAIL_SNT_FAILiaik.security.ssl.SSLException: Invalid SSL message, peer seems to be talking plain!
   

• PI Release Independent
• SAP NetWeaver
• SAP Process Integration

Process Integration 7.30, PI 7.30, Process Integration 7.31, PI 7.31, Process Orchestration 7.40, PI 7.40, PO 7.40, Process Orchestration 7.50, PI 7.50, PO 7.50, NetWeaver, XI, TLS, Security, authentication , KBA , BC-XI-CON-MAI , Mail Adapter , Problem