<<< 250-CHUNKING
??? 250 HELP
<<< 250 HELP
->>> mail from:someone9@some.domain
+>>> MAIL FROM:someone9@some.domain
??? 250
<<< 250 OK
->>> rcpt to:CALLER@test.ex
+>>> RCPT TO:CALLER@test.ex
??? 250
<<< 250 Accepted
->>> bdat 1\r\nTbdat 87 last
->>> To: Susan@random.com
+>>> BDAT 1\r\nTBDAT 87 last
+>>> o: Susan@random.com
>>> From: Sam@random.com
>>> Subject: This is a bodyless test message
>>>