mail from: <evil@evil.com>
250 2.1.0 Ok
rcpt to: <victim@example.com>
250 2.1.5 Ok
data
354 End data with <CR><LF>.<CR><LF>
From: "Apple Store" <apple@apple.com>
To: orders@apple-store.com
Subject: We just received your purchase...

Mail body goes here.
.
250 2.0.0 Ok: queued as C5E251FFE2
quit
221 2.0.0 Bye
Connection closed by foreign host.

From evil@evil.com Fri Jul 27 14:45:21 2018
Return-Path: <evil@evil.com>
X-Original-To: victim@example.com
Delivered-To: victim@example.com