sender: userx@myhost.test.ex
    from: userx@myhost.test.ex
      to: userx@myhost.test.ex
      cc: userx@myhost.test.ex
     bcc: userx@myhost.test.ex
reply-to: userx@myhost.test.ex
env-from: userx@myhost.test.ex
  env-to: userx@myhost.test.ex
  sender: aaa@bbb
    from: aaa@bbb
      to: aaa@bbb
      cc: aaa@bbb
     bcc: aaa@bbb
reply-to: aaa@bbb
env-from: aaa@bbb
  env-to: aaa@bbb
  sender: 1=@zziggly
    from: 1=@zziggly
      to: 1=@zziggly
      cc: 1=@zziggly
     bcc: 1=@zziggly
reply-to: 1=@zziggly
env-from: 1=@zziggly
  env-to: 1=@zziggly
  sender: 1=no@zzince
    from: 1=no@zzince
      to: 1=no@zzince
      cc: 1=no@zzince
     bcc: 1=no@zzince
reply-to: 1=no@zzince
env-from: 1=no@zzince
  env-to: 1=no@zzince
  sender: admin@plc.example (root@box1)
    from: admin@plc.example (root@box1)
      to: admin@plc.example (root@box1)
      cc: admin@plc.example (root@box1)
     bcc: admin@plc.example (root@box1)
reply-to: admin@plc.example (root@box1)
env-from: admin@plc.example
  env-to: unknown@plc.example
  sender: J.Caesar@plc.example
    from: J.Caesar@plc.example
      to: J.Caesar@plc.example
      cc: J.Caesar@plc.example
     bcc: J.Caesar@plc.example
reply-to: J.Caesar@plc.example
env-from: J.Caesar@plc.example
  env-to: J.Caesar@plc.example
  sender: J.Calendar@plc.example
    from: J.Calendar@plc.example
      to: J.Calendar@plc.example
      cc: J.Calendar@plc.example
     bcc: J.Calendar@plc.example
reply-to: J.Calendar@plc.example
env-from: J.Calendar@plc.example
  env-to: J.Calendar@plc.example
  sender: jules@box3.plc.example
    from: jules@box3.plc.example
      to: unknown@plc.example
      cc: unknown@plc.example
     bcc: unknown@plc.example
reply-to: jules@box3.plc.example
env-from: "jules@box3.plc.example-is-not-known"@plc.example
  env-to: unknown@plc.example
220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
250 myhost.test.ex Hello CALLER at test [10.0.0.2]
250 OK
550-Verification failed for <"jules@box3.plc.example-is-not-known"@plc.example>
550-Unrouteable mail domain "plc.example"
550 Sender verify failed
221 myhost.test.ex closing connection
  sender: abc@one.two
    from: abc@one.two
      to: abc@one.two
      cc: abc@one.two
     bcc: abc@one.two
reply-to: abc@one.two
env-from: abc@one.two
  env-to: abc@one.two
  sender: "abc"@one.two
    from: "abc"@one.two
      to: "abc"@one.two
      cc: "abc"@one.two
     bcc: "abc"@one.two
reply-to: "abc"@one.two
env-from: "abc"@one.two
  env-to: "abc"@one.two
  sender: "abc@xyz"@one.two
    from: "abc@xyz"@one.two
      to: "abc@xyz"@one.two
      cc: "abc@xyz"@one.two
     bcc: "abc@xyz"@one.two
reply-to: "abc@xyz"@one.two
env-from: "abc@xyz"@one.two
  env-to: "abc@xyz"@one.two