250 OK\r
250 Accepted\r
354 Enter message, ending with "." on a line by itself\r
-250 OK id=10HmaX-0005vi-00\r
+250 OK id=10HmaX-000000005vi-0000\r
221 myhost.test.ex closing connection\r
### ditto, on two lines from client rather than three; fails
### (not legit; the username & passwd should be suplied separately in response to prompts)