I'm trying to tune my mail server.

I'm able to send and receive email using sendmail but when I look at the header of the email sent I have some questions:

Return-Path: <user@myregistereddomain.com>
X-Original-To: clinger@bridgeband.com
Delivered-To: clinger@hotmail.com
Received: from localhost (localhost.localdomain [127.0.0.1])
by mail01.hotmail.net (Postfix) with ESMTP id 73285A4C22
for <clinger@hotmail.com>; Thu, 18 Mar 2004 15:14:10 -0700 (MST)
Received: from mail01.hotmail.net ([127.0.0.1])
by localhost (mail01.hotmail.net [127.0.0.1]) (amavisd-new, port 10024)
with LMTP id 27459-01 for <clinger@hotmail.com>;
Thu, 18 Mar 2004 15:13:58 -0700 (MST)
Received: from myregistereddomain.com (srls-160-119.bzn-co-c7206-01.hotmail.net [207.14.160.119])
by mail01.hotmail.net (Postfix) with ESMTP id A6455A4C17
for <clinger@hotmail.com>; Thu, 18 Mar 2004 15:13:56 -0700 (MST)
Received: from myregistereddomain.com (localhost.localdomain [127.0.0.1])
by myregistereddomain.com (8.12.8/8.12.8) with ESMTP id i2IMDtJo007106
for <clinger@hotmail.com>; Thu, 18 Mar 2004 15:13:56 -0700
Received: from localhost (user@localhost)
by myregistereddomain.com (8.12.8/8.12.8/Submit) with ESMTP id i2IMDt96007102
for <clinger@hotmail.com>; Thu, 18 Mar 2004 15:13:55 -0700
Date: Thu, 18 Mar 2004 15:13:55 -0700 (MST)
From: "Test User" <user@myregistereddomain.com>
To: clinger@hotmail.com
Subject: Test Thursday
Message-ID: <Pine.LNX.4.44.0403181513180.7101-100000@myregistereddomain.com>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
*************************************

Why are there 3 Received lines in the message? I would think it would go from myregistereddomain directly to hotmail.

It shows the hops your mail takes on it's way to hotmail.

Is that many hops normal?