Exchange 2007 hidden attachments
in [Microsoft Exchange]
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From: Mike Koch on 18 Mar 2008 18:10 One of our BI apps (Cognos) sends emails with PDFs attached. After moving several users mailboxes from Exchange 2003 to Exchange 2007, these users now receive the messages but the attachments are not visible in the message when viewed from Outlook 2003. They can see the attachments in OWA, or if they choose Save Attachments from the File menu in Outlook. I found one reference to this problem on a blog post that said it would be fixed in Exchange 2007 SP1, but our servers are already running Exchange 2007 SP1, so obviously that didn't fix the problem. Is this a known problem? When will it be fixed? Is there a workaround, other than the ones mentioned above? Thanks, Mike
From: Terence Liu [MSFT] on 18 Mar 2008 23:53 Hello Mike, Thank you for posting here. According to your description, I understand that you unable to view the PDF attachments in Outlook after you move mailbox from Exchange 2003 to Exchange 2007. If I have misunderstood the problem, please don't hesitate to let me know. Based on my research, I suggest we try the following steps to see if we can resolve this issue: - Open Exchange Management Console on Exchange 2007 - Under the Organization Configuration selected the Hub transport. - On the Right pane under Transport rule tab. - Created a new Transport rule. - Selected the option "When any attachment file name contains text patterns" typed .pdf - Clicked Next under Actions Select "set header with value," click the highlighted "header" text, type Content-Type, click OK - Click the highlighted "value" text, type multipart/mixed, click OK, and then click next - On the "Exceptions" page, simply click next - Finally "Create Rule" page, click New, then click Finish - Restarted the Microsoft Exchange Transport service. - Now tested the mail with PDF Attachment. If we cannot resolve the issue after we perform the above steps, please help me collect some information for further investigation: 1. If you send mail with PDF attachment from a normal Exchange mailbox account, does the issue reoccur? 2. Does this issue happen on all mailbox accounts on Exchange 2007? 3. Does this issue happen when you view the email from Outlook 2007 client? 4. Please forward the problematic email to an Exchange 2003 mailbox, does the issue still happen? I hope these steps will give you some help. Thanks and have a nice day! Best regards, Terence Liu(MSFT) Microsoft CSS Online Newsgroup Support Get Secure! - www.microsoft.com/security This posting is provided "AS IS" with no warranties, and confers no rights. -------------------- | Thread-Topic: Exchange 2007 hidden attachments | thread-index: AciJRM+g2bGORHhBT7OAB/i7AzaCWQ== | X-WBNR-Posting-Host: 207.46.19.197 | From: =?Utf-8?B?TWlrZSBLb2No?= <gsmike(a)news.postalias> | Subject: Exchange 2007 hidden attachments | Date: Tue, 18 Mar 2008 15:10:01 -0700 | Lines: 16 | Message-ID: <815C15A9-433E-4586-B11D-D96B61966ED8(a)microsoft.com> | MIME-Version: 1.0 | Content-Type: text/plain; | charset="Utf-8" | Content-Transfer-Encoding: 7bit | X-Newsreader: Microsoft CDO for Windows 2000 | Content-Class: urn:content-classes:message | Importance: normal | Priority: normal | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.2992 | Newsgroups: microsoft.public.exchange.admin | Path: TK2MSFTNGHUB02.phx.gbl | Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.exchange.admin:64974 | NNTP-Posting-Host: tk2msftsbfm01.phx.gbl 10.40.244.148 | X-Tomcat-NG: microsoft.public.exchange.admin | | One of our BI apps (Cognos) sends emails with PDFs attached. After moving | several users mailboxes from Exchange 2003 to Exchange 2007, these users now | receive the messages but the attachments are not visible in the message when | viewed from Outlook 2003. They can see the attachments in OWA, or if they | choose Save Attachments from the File menu in Outlook. | | I found one reference to this problem on a blog post that said it would be | fixed in Exchange 2007 SP1, but our servers are already running Exchange 2007 | SP1, so obviously that didn't fix the problem. | | Is this a known problem? When will it be fixed? Is there a workaround, other | than the ones mentioned above? | | Thanks, | Mike | |
From: John Fullbright on 19 Mar 2008 12:49 I'd suspect the problem is outlook attachment security. The key is "They can see the attachments in OWA, or if they choose Save Attachments from the File menu in Outlook" which indicates Level 2 attachment blocking. That the files are accessable in OWA, sounds to me that they are not being blocked at the server but rather at the client. Generally, when you see problems with an extention that is not on the level 1 or level 2 lists, it's because of the way the attachment is mime encoded. Instead of application/pdf, it may be encoded application/octet-stream. "Mike Koch" <gsmike(a)news.postalias> wrote in message news:815C15A9-433E-4586-B11D-D96B61966ED8(a)microsoft.com... > One of our BI apps (Cognos) sends emails with PDFs attached. After moving > several users mailboxes from Exchange 2003 to Exchange 2007, these users > now > receive the messages but the attachments are not visible in the message > when > viewed from Outlook 2003. They can see the attachments in OWA, or if they > choose Save Attachments from the File menu in Outlook. > > I found one reference to this problem on a blog post that said it would be > fixed in Exchange 2007 SP1, but our servers are already running Exchange > 2007 > SP1, so obviously that didn't fix the problem. > > Is this a known problem? When will it be fixed? Is there a workaround, > other > than the ones mentioned above? > > Thanks, > Mike >
From: Mike Koch on 19 Mar 2008 14:49 Hi Terence, While the transport rule you described fixed this particular problem, it also broke users' ability to send normal PDF attachments from Outlook. If one user attached a PDF to a message and sent it to another user, the recipient received a blank message - no PDF was attached. Because of this, I had to disable the transport rule. To answer your other questions: (1) Sending mail with PDF attachment from a normal Exchange mailbox via Outlook works as expected. (2) No, it seems to only affect certain Exchange 2007 mailboxes (3) Unknown at this time (4) Forwarding the message, even back to the same mailbox, causes the attachment to become visible. Any chance that the SP1 hotfix rollup 1 package addresses this problem? Thanks, Mike "Terence Liu [MSFT]" wrote: > Hello Mike, > > Thank you for posting here. > > According to your description, I understand that you unable to view the PDF > attachments in Outlook after you move mailbox from Exchange 2003 to > Exchange 2007. If I have misunderstood the problem, please don't hesitate > to let me know. > > Based on my research, I suggest we try the following steps to see if we can > resolve this issue: > > - Open Exchange Management Console on Exchange 2007 > - Under the Organization Configuration selected the Hub transport. > - On the Right pane under Transport rule tab. > - Created a new Transport rule. > - Selected the option "When any attachment file name contains text > patterns" typed .pdf > - Clicked Next under Actions Select "set header with value," click the > highlighted "header" text, type Content-Type, click OK > - Click the highlighted "value" text, type multipart/mixed, click OK, and > then click next > - On the "Exceptions" page, simply click next > - Finally "Create Rule" page, click New, then click Finish > - Restarted the Microsoft Exchange Transport service. > - Now tested the mail with PDF Attachment. > > If we cannot resolve the issue after we perform the above steps, please > help me collect some information for further investigation: > > 1. If you send mail with PDF attachment from a normal Exchange mailbox > account, does the issue reoccur? > > 2. Does this issue happen on all mailbox accounts on Exchange 2007? > > 3. Does this issue happen when you view the email from Outlook 2007 client? > > 4. Please forward the problematic email to an Exchange 2003 mailbox, does > the issue still happen? > > I hope these steps will give you some help. > > Thanks and have a nice day! > > Best regards, > > Terence Liu(MSFT) > > Microsoft CSS Online Newsgroup Support > > Get Secure! - www.microsoft.com/security > > This posting is provided "AS IS" with no warranties, and confers no rights. > > -------------------- > | Thread-Topic: Exchange 2007 hidden attachments > | thread-index: AciJRM+g2bGORHhBT7OAB/i7AzaCWQ== > | X-WBNR-Posting-Host: 207.46.19.197 > | From: =?Utf-8?B?TWlrZSBLb2No?= <gsmike(a)news.postalias> > | Subject: Exchange 2007 hidden attachments > | Date: Tue, 18 Mar 2008 15:10:01 -0700 > | Lines: 16 > | Message-ID: <815C15A9-433E-4586-B11D-D96B61966ED8(a)microsoft.com> > | MIME-Version: 1.0 > | Content-Type: text/plain; > | charset="Utf-8" > | Content-Transfer-Encoding: 7bit > | X-Newsreader: Microsoft CDO for Windows 2000 > | Content-Class: urn:content-classes:message > | Importance: normal > | Priority: normal > | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.2992 > | Newsgroups: microsoft.public.exchange.admin > | Path: TK2MSFTNGHUB02.phx.gbl > | Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.exchange.admin:64974 > | NNTP-Posting-Host: tk2msftsbfm01.phx.gbl 10.40.244.148 > | X-Tomcat-NG: microsoft.public.exchange.admin > | > | One of our BI apps (Cognos) sends emails with PDFs attached. After moving > | several users mailboxes from Exchange 2003 to Exchange 2007, these users > now > | receive the messages but the attachments are not visible in the message > when > | viewed from Outlook 2003. They can see the attachments in OWA, or if they > | choose Save Attachments from the File menu in Outlook. > | > | I found one reference to this problem on a blog post that said it would > be > | fixed in Exchange 2007 SP1, but our servers are already running Exchange > 2007 > | SP1, so obviously that didn't fix the problem. > | > | Is this a known problem? When will it be fixed? Is there a workaround, > other > | than the ones mentioned above? > | > | Thanks, > | Mike > | > | > >
From: Mike Koch on 19 Mar 2008 14:53 That's the first thing I thought of when the problem was reported, but the only thing that changed was that the mailbox was moved from Exchange 2003 to Exchange 2007. The Outlook client never changed, no policies or GPOs were changed, nothing that would have caused Outlook to suddenly start blocking PDF files. Plus, if Outlook were truly blocking the files, the users wouldn't be able to save them from the File menu. "John Fullbright" wrote: > I'd suspect the problem is outlook attachment security. The key is "They > can see the attachments in OWA, or if they > choose Save Attachments from the File menu in Outlook" which indicates > Level 2 attachment blocking. That the files are accessable in OWA, sounds > to me that they are not being blocked at the server but rather at the > client. > > Generally, when you see problems with an extention that is not on the level > 1 or level 2 lists, it's because of the way the attachment is mime encoded. > Instead of application/pdf, it may be encoded application/octet-stream. > > > "Mike Koch" <gsmike(a)news.postalias> wrote in message > news:815C15A9-433E-4586-B11D-D96B61966ED8(a)microsoft.com... > > One of our BI apps (Cognos) sends emails with PDFs attached. After moving > > several users mailboxes from Exchange 2003 to Exchange 2007, these users > > now > > receive the messages but the attachments are not visible in the message > > when > > viewed from Outlook 2003. They can see the attachments in OWA, or if they > > choose Save Attachments from the File menu in Outlook. > > > > I found one reference to this problem on a blog post that said it would be > > fixed in Exchange 2007 SP1, but our servers are already running Exchange > > 2007 > > SP1, so obviously that didn't fix the problem. > > > > Is this a known problem? When will it be fixed? Is there a workaround, > > other > > than the ones mentioned above? > > > > Thanks, > > Mike > > > > >
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