+--NNNNNNNNNN-eximdsn-MMMMMMMMMM
+Content-type: message/delivery-status
+
+Reporting-MTA: dns; the.local.host.name
+
+Action: failed
+Final-Recipient: rfc822;pipe@test.ex
+Status: 5.0.0
+
+--NNNNNNNNNN-eximdsn-MMMMMMMMMM
+Content-type: message/rfc822