使用 mutt 產生 message/rfc822 測資 @ Ubuntu 12.04

最近正在研究 email 格式，其中一個 content-type: message/rfc822 很神秘，好像很久沒看過了？甚至 2010 年 GMail 相關討論串 中，仍看得到抱怨 GMail 不處理 (現況經測試，GMail 都會將 message/rfc822 展開)

接著就是來產生 message/rfc822 了，這似乎比較常從 outlook 那邊看到，但懶得用outlook 產品，直接用 mutt 吧！

使用 mutt 時，可以設定 mime forward 機制後，接著每一封轉信都可以用 message/rfc822 格式寄出。

$ vim ~/.muttrc
set mime_forward=yes
set mime_forward_rest=yes

或是使用 mutt 時，按 : 去設定上述兩個值亦可。

一封寄給自己的信：

Return-Path: <changyy@vm>
X-Original-To: changyy@vm
Delivered-To: changyy@vm
Received: by vm (Postfix, from userid 1000)
        id 03701604E5; Sat, 26 Oct 2013 10:53:47 +0800 (CST)
Date: Sat, 26 Oct 2013 10:53:47 +0800
From: changyy <changyy@vm>
To: changyy <changyy@vm>
Subject: Test message/rfc822
Message-ID: <20131026025347.GA17760@vm>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.5.21 (2010-09-15)
Status: RO
Content-Length: 9
Lines: 1

as title

把上述那封用 message/rfc822 轉寄給自己：

Return-Path: <changyy@vm>
X-Original-To: changyy@vm
Delivered-To: changyy@vm
Received: by vm (Postfix, from userid 1000)
        id B96A9604E5; Sat, 26 Oct 2013 10:54:13 +0800 (CST)
Date: Sat, 26 Oct 2013 10:54:13 +0800
From: changyy <changyy@vm>
To: changyy <changyy@vm>
Subject: [changyy@vm: Test message/rfc822]
Message-ID: <20131026025413.GB17760@vm>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="KsGdsel6WgEHnImy"
Content-Disposition: inline
User-Agent: Mutt/1.5.21 (2010-09-15)
Status: RO
Content-Length: 703
Lines: 29


--KsGdsel6WgEHnImy
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

forward test

--KsGdsel6WgEHnImy
Content-Type: message/rfc822
Content-Disposition: inline

Return-Path: <changyy@vm>
X-Original-To: changyy@vm
Delivered-To: changyy@vm
Received: by vm (Postfix, from userid 1000)
        id 03701604E5; Sat, 26 Oct 2013 10:53:47 +0800 (CST)
Date: Sat, 26 Oct 2013 10:53:47 +0800
From: changyy <changyy@vm>
To: changyy <changyy@vm>
Subject: Test message/rfc822
Message-ID: <20131026025347.GA17760@vm>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.5.21 (2010-09-15)

as title

--KsGdsel6WgEHnImy--