| From: root@localhost | |
| MIME-Version: 1.0 | |
| Content-Transfer-Encoding: 7bit | |
| Content-Type: multipart/mixed; boundary="outer" | |
| --outer | |
| From: sub@localhost | |
| MIME-Version: 1.0 | |
| Content-Transfer-Encoding: 7bit | |
| Content-Type: multipart/mixed; boundary="inner" | |
| --inner | |
| MIME-Version: 1.0 | |
| a | |
| --inner | |
| MIME-Version: 1.0 | |
| b | |
| --inner-- | |
| --outer | |
| MIME-Version: 1.0 | |
| sig | |
| --outer-- |