Dear community, I have a couple of users experiencing heavy impact on their daily work. What is happening: A user receives an external email sent to all members of the team. The user replies, for example, to all in his turn and certain internal recipients receive this reply without sender, without recipient, with empty body and winmail.dat as an attachment. When inspecting the header I can see that fields like “from”, “to” etc. are not present there at all (please see the example below). To check the behavior we did the following a. Opened the original email b. Chose “reply to all” c. Checked the message format being HTML d. Sent the message The message arrives again with no information excepting winmail.dat Repeated the steps above, but with message format Text Only being chosen. Same result, no sender, no recipient, no body, winmail.dat Created a new message, copied whole content of the previous one, sent it again to all – in this case the message arrives intact. I can hardly understand why only few internal recipients are facing the problem and in the same time other recipients whose mailboxes reside on the same mail server receive the very same messages with all information in place? Here is my example: Microsoft Mail Internet Headers Version 2.0 Received: ServerName.Domain.com ([192.168.5.18]) by ServerName.Domain.com with Microsoft SMTPSVC(6.0.3790.4675); Tue, 24 May 2011 10:48:49 +0200 Content-Class: urn:content-classes:message Subject: RE: DRAM demand E/May MIME-Version: 1.0 Content-Type: application/ms-tnef; name="winmail.dat" Content-Transfer-Encoding: binary Date: Tue, 24 May 2011 10:48:49 +0200 X-MimeOLE: Produced By Microsoft Exchange V6.0.6619.12 Message-ID: <8D50446523C6D147AA8814C8B2E1718201049A31@ ServerName.Domain.com > X-MS-Has-Attach: yes X-MS-TNEF-Correlator: <8D50446523C6D147AA8814C8B2E1718201049A31@ ServerName.Domain.com > Thread-Topic: DRAM demand E/May thread-index: AcwGS9a7LwFOoHd4QNWWk1rVQNbEiQAQf0UQAACTDTAAAINKYAAAYrTQABaiJbAAncYqkABGHcSwABzjfGAAQJVzsACMOkAgAAW26nAAA3L8kAAAY84wAAE8NEAAYSfMwAABR7mAAASdogAALzYmkAACXhhgACLn69AAAEauEAAApLpAAABrHWAAAnmpkACUQ2UAAAaJFyAAABPskAADbixQAAS4G4AAJ3JpUAAH1KxQAF0BkdAALUlxsAAAZ74QAAAzK/AACc6+YADBfMqw References: <01af01cc064b$d74a8200$85df8600$%hippel@samsung.com> <DB5E471EFA085A49A89C31FB61332DA701566C53@ ServerName.Domain.com > <02a501cc0690$c2013ca0$4603b5e0$%hippel@samsung.com> <DB5E471EFA085A49A89C31FB61332DA701566C5B@ ServerName.Domain.com > <02b301cc0693$ceacc4d0$6c064e70$%hippel@samsung.com> <DB5E471EFA085A49A89C31FB61332DA701566C5E@ ServerName.Domain.com> <8D50446523C6D147AA8814C8B2E17182FAA773@ ServerName.Domain.com> <007101cc0a7f$33751fe0$9a5f5fa0$%hippel@samsung.com> <DB5E471EFA085A49A89C31FB61332DA701566EE5@ ServerName.Domain.com> <011801cc0bf4$6feb7750$4fc265f0$%hippel@samsung.com> <DB5E471EFA085A49A89C31FB61332DA701566FD7@ ServerName.Domain.com> <00c101cc0e47$29cc3f20$7d64bd60$%hippel@samsung.com> <DB5E471EFA085A49A89C31FB61332DA701567044@ ServerName.Domain.com> <00ce01cc0e4b$8b71aa40$a254fec0$%hippel@samsung.com> <DB5E471EFA085A49A89C31FB61332DA701567050@ ServerName.Domain.com> <009d01cc0fd5$98ceeb90$ca6cc2b0$%hippel@samsung.com> <"8D50446523C6D147AA88 A9C9"@d-f- In all cases I have observed these messages either are originating from Asia or were already sent to Asia and returned as reply. The header of all messages involved contains the references similar as in the example above. Even when using OWA there is no chance to see who have sent the message and what was in it. Please help. Thank you Eduard

here you go " The file is attached to the email because the original sender is sending emails in Microsoft Outlook Rich Text Format instead of Plain Text format. How to Configure Outlook NOT to send Winmail.dat attachments To Turn off Rich Text sending for messages in Microsoft Outlook 1) Click on Tools 2) Click Options, and then click the Mail Format tab. 3) In the Send in this Message Format list, select Plain Text, and then click OK. http://support.microsoft.com/?kbid=138053Oz Casey, Dedeal, Microsoft MVP - Exchange Server, MCITP (EMA), MCITP (EA), MCITP (SA) Visit smtp25.blogspot.com Visit Telnet25.wordpress.com This posting is provided AS-IS with no warranties or guarantees and confers no rights.

Having dealt with the winmail.dat problem myself, I'm wondering if the HTML format would avoid the problem as well? Or is Plain Text the only option? Downside with Plain Text is that you cannot format text: no bold, underline, italics or bullets.

"Microsoft Exchange V6.0.6619.12" - That's Exchange 2000. Ever thought about ugrading? In Exchange 2000, you can force not to use RTF server side: http://support.microsoft.com/kb/319252 It's eaiser than coordinating settings on multiple outlook clients: http://support.microsoft.com/default.aspx?scid=kb;EN-US;290809 J