3341119 - No email is sent from IAS when using custom mail server

• User does not receive any email and when checking the logs, following error can be seen (mail subject is an example):

  "yyyy-mm-ddThh.mm.ss.000Z timestamp="yyyy-mm-ddThh.mm.ss.000Z", ipAddress="<ipadress>", severity="INFO", location="umtrace", crtAccount="<TenantId>", authenticatedSubject="anonymous", 
  correlationId="<ID>", state="failed", action="sendMail", objectType="user", objectId="xxx@companyname.com", 
  message="Sending the email to the following server failed :<mail server>", category="audit.configuration", mailSubject="How to reset your password", 
  currentPoolSize="300", currentActiveThreads="1"

              

SAP Cloud Identity Services

custom mail server, Email could not be sent to, Sending the email to the following server failed, smtp.office365.com:587, Authentication unsuccessful, smtp.office365.com, user credentials were incorrect , KBA , BC-IAM-IDS , Identity Authentication Service , Problem