This is the way invites are received:

Return-Path: <rajesh_pankaj@sifycorp.com>
Delivered-To: sifycorp.com-leela_pal@sifycorp.com
X-Filter: xFilter/SifyMail Revision 2.36 (http://mail.sify.com)
Received: (sifymail 13582 invoked by uid 507); Thu Mar 30 12:59:13 2006
Received: (sifymail 13579 invoked by uid 507); 30 Mar 2006 12:59:13 +0530
Received: from 10.1.8.85 (HELO sifycorp.com) (10.1.8.85)
 by 10.1.8.86 with ESMTP; 30 Mar 2006 12:59:13 +0530
Received: (sifymail 25949 invoked from 10.1.8.85 by host sifycorpmail by uid
508); 30 Mar 2006 12:59:12 +0530
Received: from 10.1.8.85 (HELO sifycorp.com) (10.1.8.85)
 by 10.1.8.85 with SMTP; 30 Mar 2006 12:59:12 +0530
Received: (sifymail 25875 invoked from 210.18.127.26 by host sifycorpmail by
uid 508); 30 Mar 2006 12:59:12 +0530
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws;
 s=corporate; d=sifycorp.com;
 b=tiAPXWk8ypkKR8Dz5nye8UEzXF5SI8+0XcAkC7TjxWM4ogA5Ffmd4NKYYF50d//n  ;
Received: from 210.18.127.26 (HELO rajesh)
(rajesh?pankaj@sifycorp.com@210.18.127.26)by 10.1.8.85 with SMTP; 30 Mar 2006
12:59:12 +0530
From: "Rajesh Pankaj" <rajesh_pankaj@sifycorp.com>
To: "'Leela Pal'" <leela_pal@sifycorp.com>,"'Kavitha'"
<ravipati_kavitha@sifycorp.com>,"'Shan'" <shanmugam_k@sifycorp.com>
Subject: CISCO Training Plan
Date: Thu, 30 Mar 2006 12:59:31 +0530
MIME-Version: 1.0
Content-Type: text/calendar; method=REQUEST;charset="utf-8"
Content-Transfer-Encoding: 7bit
X-Mailer: Microsoft Office Outlook, Build 11.0.6353
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180
Thread-Index: AcZTy6+R92pjwr0uTxOKdODV3fuXUA==

BEGIN:VCALENDAR
PRODID:-//Microsoft Corporation//Outlook 11.0 MIMEDIR//EN
VERSION:2.0
METHOD:REQUEST
BEGIN:VEVENT
ATTENDEE;ROLE=REQ-PARTICIPANT;RSVP=TRUE:MAILTO:leela_pal@sifycorp.com
ATTENDEE;ROLE=REQ-PARTICIPANT;RSVP=TRUE:MAILTO:ravipati_kavitha@sifycorp.com
ATTENDEE;ROLE=REQ-PARTICIPANT;RSVP=TRUE:MAILTO:shanmugam_k@sifycorp.com
ORGANIZER:MAILTO:rajesh_pankaj@sifycorp.com
DTSTART:20060331T053000Z
DTEND:20060331T063000Z
TRANSP:OPAQUE
SEQUENCE:
UID:040000008200E00074C5B7101A82E00800000000A03C49C9F953C6010000000000000000100
00000D407FDB19BD25E479114274204510A7D
DTSTAMP:20060330T072931Z
DESCRIPTION:When: Friday\, March 31\, 2006 11:00 AM-12:00 PM (GMT+05:30)
 Chennai\, Kolkata\, Mumbai\, New Delhi.\n\n*~*~*~*~*~*~*~*~*~*\n\n\n
SUMMARY:CISCO Training Plan
PRIORITY:5
X-MICROSOFT-CDO-IMPORTANCE:1
CLASS:PUBLIC
BEGIN:VALARM
TRIGGER:-PT15M
ACTION:DISPLAY
DESCRIPTION:Reminder
END:VALARM
END:VEVENT
END:VCALENDAR

Please please help to resolve this!! Thanks mucho :-)