ref: 4bb9e229bcb23826a0fde907667c8fd6565d98d2
dir: /sys/lib/python/email/test/data/msg_34.txt/
From: aperson@dom.ain To: bperson@dom.ain Content-Type: multipart/digest; boundary=XYZ --XYZ Content-Type: text/plain This is a text plain part that is counter to recommended practice in RFC 2046, $5.1.5, but is not illegal --XYZ From: cperson@dom.ain To: dperson@dom.ain A submessage --XYZ--