******** SERVER ********
Listening on port 1224 ... 
Connection request from [127.0.0.1]
220 ESMTP
EHLO Tweedledum to 127.0.0.1 [127.0.0.1]
250-OK
250 HELP
MAIL FROM:<CALLER@myhost.test.ex>
450 Defer
QUIT
221 OK
Unexpected EOF read from client
Listening on port 1224 ... 
Connection request from [ip4.ip4.ip4.ip4]
220 ESMTP
EHLO Tweedledee to ip4.ip4.ip4.ip4 [ip4.ip4.ip4.ip4]
250-OK
250 HELP
MAIL FROM:<CALLER@myhost.test.ex>
450 Defer
QUIT
221 OK
End of script