I'm using Exchange 2007 SP1. My java application sends email to users of exchange 2007 SP1. The email contains an email as an attachment which is base64 encoded . This email when sent to users on exchange 2007 SP1 shows blank attachment. The same email when sent to users on different exchange (e.g. Exchange 2003) shows the correct attachment i.e. the attachments are not blank. While sending the mail i'm setting name of the attachment in Content-Type header but it is not there when we look at the rfc contents of the mail received on ex 2007 SP1. It seems exchange 2007 is not able to decode the base 64 contents properly. Below are the rfc contents of the mail which show few headers in the attachment part instead of the base64 content. Please suggest some solution to it. It's urgent. Received: from test80.psjpr.com (192.168.0.243) by exchange01.psjpr.com(192.168.0.138) with Microsoft SMTP Server id 8.1.263.0; Fri, 11 Apr 200818:53:12 +0530From: Admin <test@psjpr.com>To: test test1<test@psjpr.com>Date: Fri, 11 Apr 2008 18:53:12 +0530Subject: Retrieved from : testinggggggThread-Topic: Retrieved from : testinggggggThread-Index: Acib1zFeboxSL6S4RuaeI0AaCou0pQ==Message-ID: <9c2e5956-bc9b-49ef-bbc6-1a358f61698b@exchange01.psjpr.com>Accept-Language: en-USContent-Language: en-USX-MS-Exchange-Organization-AuthAs: AnonymousX-MS-Exchange-Organization-AuthSource: exchange01.psjpr.comX-MS-Has-Attach: yesX-MS-TNEF-Correlator:Content-Type: multipart/mixed;boundary="_002_9c2e5956bc9b49efbbc61a358f61698bexchange01psjprcom_"MIME-Version: 1.0 --_002_9c2e5956bc9b49efbbc61a358f61698bexchange01psjprcom_Content-Type: text/plain; charset="iso-8859-1"Content-Transfer-Encoding: quoted-printable The message you requested is attached. --_002_9c2e5956bc9b49efbbc61a358f61698bexchange01psjprcom_Content-Type: message/rfc822 Subject:Thread-Index: Acib1zFexS+KMQAOSD+lcMut076Wyg==Accept-Language: en-USX-MS-Has-Attach:X-MS-TNEF-Correlator:Content-Type: text/plain; charset="us-ascii"Content-Transfer-Encoding: quoted-printableMIME-Version: 1.0 --_002_9c2e5956bc9b49efbbc61a358f61698bexchange01psjprcom_--