??? 220
NOOP
??? 250
rhubarb
??? 500
mail from:<x@y>
??? 503
rcpt to:<a@b>
??? 503
ehlo test.client
??? 250-
??? 250-PIPELINING
??? 250-8BITMIME
??? 250-CHUNKING
??? 250-ENHANCEDSTATUSCODES
??? 250 SIZE
mail
??? 501
mail from:
??? 501
mail from:<>
??? 250
mail from:<x@y>
??? 503
rcpt to:
??? 501
data
??? 503
rset
??? 250
etrn abc
??? 500
vrfy userx
??? 252
help
??? 214
mail from:<ok@test1> SIZE=100 BODY=8BITMIME
??? 250
rcpt to:<userx@test.ex>
??? 250
rcpt to:<@relay.example:route@test.ex>
??? 250
data
??? 354
..that line started with a dot
.. and one starting with two dots
Message body
.
??? 250
mail from:<a@b> SIZE=99999999
??? 552
mail from:<a@b> BODY=BINARYMIME
??? 555
mail from:<a@b> FOO=bar
??? 555
mail from:<a@b> SIZE=nan
??? 501
starttls
??? 502
BDAT 5
abc
??? 503
mail from:<chunky@test.ex>
??? 250
rcpt to:<userx@test.ex>
??? 250
BDAT 7
hello
??? 250
BDAT 23 LAST
world of chunked mail
??? 250
quit
??? 221