text: # authentication (preservation of $authenticated_id)
  exim -odi -bs -oMa 10.0.0.2
  ehlo testing.ex
  auth plain AHVzZXJ4CgBzZWNyZXQ=
  auth plain AHVzZXJ4AHNlY3JldA==
  mail from:<userx@test.ex>
  rcpt to:<userx@test.ex>
  data
  Test data
  .
  quit 
  ****
  no_msglog_check
  