I need some education here in header analysis.

Client reports that she received an email a day or two late, so she wants to know why it took so long for the email to arrive. Is there anything I can derive from examining the headers of the message?

Code:
Microsoft Mail Internet Headers Version 2.0
Received: from server.domain.com ([xxx.xxx.xxx.xxx]) by mailserverdomail.com with Microsoft SMTPSVC(5.0.2195.6872);
  Mon, 3 Apr 2006 09:59:36 -0500
Received: from server.senderdomain.com ([yyy.yyy.yyy.yyy]) by server.domain.com with Microsoft SMTPSVC(6.0.3790.1830);
  Mon, 3 Apr 2006 09:59:36 -0500
In-Reply-To: <[email protected]>
To: "Recepient" <[email protected]>
Subject: RE: blah blah blah blah
MIME-Version: 1.0
X-Mailer: Lotus Notes Release 6.5.4 March 27, 2005
Message-ID: <OF9C271313.A7A69423-ON86257141.007182C7-86257141.00719784@senderdomain.com>
From:[email protected]
Date: Thu, 30 Mar 2006 14:40:43 -0600
X-MIMETrack: Serialize by Router on NOTES308/USTEL/NERA(Release 6.5.1|January 21, 2004) at
 04/03/2006 10:04:12 AM,
 Serialize complete at 04/03/2006 10:04:12 AM
Content-Type: multipart/alternative; boundary="=_alternative 0071978086257141_="
Return-Path: [email protected]
X-OriginalArrivalTime: 03 Apr 2006 14:59:36.0588 (UTC) FILETIME=[3977F4C0:01C6572F]
 
--=_alternative 0071978086257141_=
Content-Type: text/plain; charset="US-ASCII"
 
--=_alternative 0071978086257141_=
Content-Type: text/html; charset="US-ASCII"
 

--=_alternative 0071978086257141_=--