+DSN: processing router : r4
+DSN: processing successful delivery address: kilos@recurse.test.ex.test.ex
+DSN: Sender_address: CALLER@test.ex
+DSN: orcpt: NULL flags: 0
+DSN: envid: NULL ret: 0
+DSN: Final recipient: kilos@recurse.test.ex.test.ex
+DSN: Remote SMTP server supports DSN: 0
+DSN: not sending DSN success message
+DSN: processing router : r3
+DSN: processing successful delivery address: kilos@recurse.test.ex.test.ex
+DSN: Sender_address: CALLER@test.ex
+DSN: orcpt: NULL flags: 0
+DSN: envid: NULL ret: 0
+DSN: Final recipient: kilos@recurse.test.ex.test.ex
+DSN: Remote SMTP server supports DSN: 0
+DSN: not sending DSN success message