Hi I am in the middle of an exchange 2003 to exchange 2010 migration and am getting NDR's from users on the 2003 server when trying to send to users on 2010. The scenario here is root forest domain 2003 and tree root domain for 2010 , replications is working well, dns is set up and working well. Exchange 2010 has the smtp send connector and all mail is recieved and send by the exchnage 2010 server. All external email from all usrs regardelss of server are fine. when a user that mailbox is on the exchnage 2003 server sends an email to a user on the exchange 2010 server an ndr is generated imidiatelly. The message contains a content type that is not supported (i have changed names to protect the inicent) <2010.domain.con #5.6.0 smtp;554-5.6.0 Corrupt message content 554 5.6.0 STOREDRV.Deliver.Exception:ConversionFailedException; Failed to process message due to a permanent exception with message Content conversion: Corrupt summary TNEF content. ConversionFailedException: Content conversion: Corrupt summary TNEF content.> The Header is... Microsoft Mail Internet Headers Version 2.0 Received: from SEADC01.swrd.ad ([192.168.0.4]) by mail.swrd.com with Microsoft SMTPSVC(6.0.3790.4675); Fri, 17 Jun 2011 14:47:03 +0300 MIME-Version: 1.0 From: Microsoft Outlook <MicrosoftExchange329e71ec88ae4615bbc36ab6ce41109e@domain.com> To: <Compulse@swrd.com> Date: Fri, 17 Jun 2011 14:47:02 +0300 Content-Type: multipart/report; report-type=delivery-status; boundary="99e5a6f6-c7e4-47b0-9813-7612bfaae4aa" Content-Language: en-US Message-ID: <33b6117f-bc0d-4b90-bab4-a44705262961@SEADC01.domain.com> In-Reply-To: <287C5DE512E3B444A548DDF0F88FCCADC41BAF@2003-EXCH.domain.com> References: <287C5DE512E3B444A548DDF0F88FCCADC41BAF@2003-EXCH.domain.com> Thread-Index: Acws5EXSdh4PMfJgRuuzZ2VVDCaIlQAAABdy Subject: Undeliverable: Return-Path: <> X-OriginalArrivalTime: 17 Jun 2011 11:47:03.0129 (UTC) FILETIME=[4658C490:01CC2CE4] --99e5a6f6-c7e4-47b0-9813-7612bfaae4aa Content-Type: multipart/alternative; differences=Content-Type; boundary="985bd12b-6ca3-4123-a77f-c9aef51413aa" --985bd12b-6ca3-4123-a77f-c9aef51413aa Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable --985bd12b-6ca3-4123-a77f-c9aef51413aa Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable --985bd12b-6ca3-4123-a77f-c9aef51413aa-- --99e5a6f6-c7e4-47b0-9813-7612bfaae4aa Content-Type: message/delivery-status --99e5a6f6-c7e4-47b0-9813-7612bfaae4aa Content-Type: message/rfc822 Received: from mail.swrd.com (192.168.0.10) by 2010.domain.com(192.168.0.4) with Microsoft SMTP Server id 14.1.289.1; Fri, 17 Jun 2011 14:47:02 +0300 Content-Class: urn:content-classes:message MIME-Version: 1.0 Content-Type: application/ms-tnef; name="winmail.dat" Content-Transfer-Encoding: base64 Subject: X-MimeOLE: Produced By Microsoft Exchange V6.5 Date: Fri, 17 Jun 2011 14:47:02 +0300 Message-ID: <287C5DE512E3B444A548DDF0F88FCCADC41BAF@SEAWARD-EXCH.SEAWARD_DOM> X-MS-Has-Attach: X-MS-TNEF-Correlator: <287C5DE512E3B444A548DDF0F88FCCADC41BAF@SEAWARD-EXCH.SEAWARD_DOM> Thread-Index: Acws5EXSdh4PMfJgRuuzZ2VVDCaIlQ== From: compulse <2003user@domain.com> To: "Bambos Eleftheriou (compulse Ltd)" <2010user@domain.com> Return-Path: 2010user@domain.com X-BitDefender-AHV: 63443908022@domain.com I have disabled the Anitvirus and antispam engines (same thing, no change) all firewalls are off. The strange thing is is was working fine up untill today. The only change that was made yesterday and that was the cisco firewall rules changed for incoming email to be forwared to the ex2010 server together with opening ports for 443 (owa) ex 2010 server. Exchamge 2010 is sp1 roll up 3 v3 (applied about 2 weeks ago) I have been seaching for a solution all day and really cant find any anywhere please help... Regards Bam

please drill down a bit of scope of this issue. if it comes out to be single/ or a few users changing the registery below may be helpfull \hkey_classes_root\.jpeg, the (Default) should be "jpegfile", and the Content Type should be "image/jpeg Thank youDhruv

Hi The issue is with html formatted emails sent from users on the exchange 2003 server to users on the exchange 2010 sp1 server. all users (only 15) but all users to any user on ex2010 regardeless if from outlook 2003 or OWA. Ndr <2010.domain.con #5.6.0 smtp;554-5.6.0 Corrupt message content 554 5.6.0 STOREDRV.Deliver.Exception:ConversionFailedException; Failed to process message due to a permanent exception with message Content conversion: Corrupt summary TNEF content. ConversionFailedException: Content conversion: Corrupt summary TNEF content.>

Hi Bam, Are Exchange 2003 and Exchange 2010 server in the same organization/forest? Any transport rule enabled on Exchange 2010 server? You may also enable the message tracking to see if there is any error. For details steps, see http://technet.microsoft.com/en-us/library/aa997984.aspx. Best regards, Fiona LiaoPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.