220 mail.examplet.net ESMTP Postfix
HELO client.example.net
250 mail.example.net
client MAIL FROM: joerg@example.net
250 OK
RCPT TO: sabine@example.net
250 OK
DATA
354 End data with <CR><LF>.<CR><LF>
From: Joerg Mustermann <joerg@example.net>
To: Sabine Musterfrau <sabine@example.net>
Subject: HDL

Hallo Lausemädchen,
wir sehen uns nachher.
.
250 OK: queued as E82C21839B9
QUIT
221 Bye