[LI] Mail Headers - What do they mean ?

["Ravi" <ravikant@xxxxxxxxxxxxxxxxxxx>]

Hey there ,
  I saw this in the headers of one mail from a persin using an @usa.net
email address:
- ------
X-MSMail-Priority: High
X-Priority: 1                       <--------- What other values can it take
, and what do they signify?
X-Mailer: USANET web-mailer (MaintM3.3.0.77)
Mime-Version: 1.0
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from quoted-printable to 8bit by lists.linux-india.org
id BAA22464 <---- Why is it auto converting to 8bit ? Whats that for ?
Sender: owner-linux-india@xxxxxxxxxxxxxxxxxxxxx
X-Loop: linux-india@xxxxxxxxxxxxxxxxxxxxx   <--------- Whats this ?
Precedence: bulk
Reply-To: linux-india@xxxxxxxxxxxxxxxxxxxxx
X-Url: http://www.linux-india.org        <---------- How does once
incorporate an X-URL column in his mails?
- ------
  Thanks
- - Ravi.

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