3696341 - No delivery to <EmailAddress> due to error with authentication - XS858

• An error occurs when attempting to configure email sending from SAP, in SOST the error message is: "No delivery to EmailAddress due to error with authentication" (Message No. XS858).
• The mail server is GSMTP (Google SMTP) 
• The long text of the XS858 show:
  
  No delivery to EmailAddress  due to error with authentication - Message No. XS858

  Diagnosis

  The message was processed successfully in the SAP system. The mail server that is to receive the message for further processing demands authentication and registers that an error has occurred.

  Information from external system (if available)

  smtp.gmail.com:587

  534 5.7.9  https://support.google.com/mail/?p=WebLoginRequired stringofcharacterswillbeseenhere

  Procedure

  Check the security settings on the SAPconnect node.

• SAP Business Technology Platform
• SAP Basis release independent

due to error with authentication, XS858, 534 5.7.9, https://support.google.com/mail/?p=WebLoginRequired, , KBA , BC-SRV-COM , Communication Services: Mail, Fax, SMS, Telephony , Problem