From the fragments, this appears to be a formatted record—possibly from a user list, email log, or account database—with fields separated by hyphens or spaces.
tnzyl- -MX- - benic-10-hotmail.com - -Estandar-... tnzyl- -MX- - benic-10-hotmail.com - -Estandar-...
It looks like you’ve provided a partial or masked string: From the fragments, this appears to be a