Cannot view attachments in Outlook 2003

I have a customer that is unable to view attachments that are sent to him from a company in Korea.  I noticed in the header information that the mail server is IceWarp Mailer.  If the customer forwards the e-mail, others are able to veiw and open the attachment.  In our environment, we have an Exchange 2007 server and we are  using Outlook 2003 for the client.
ExpertAssistAsked:
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ExpertAssistConnect With a Mentor Author Commented:
Ok, I fixed the issue, but I still don't know why a .tmp file is sent with this e-mail.  The actual file that the user sees is a .pdf, but there is an additional .tmp attachment that you don't see that is getting blocked by Outlook.  If anyone could shed the light on why the .tmp file is sent, I would be interested.  As I stated, the source server is using IceWarp Mailer.

The fix was to unblock .tmp files on the client's Outlook.  Here is a link to the process that I used to unblock the .tmp file.  http://www.howto-outlook.com/faq/blockedattachments.htm
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BCipolloneCommented:
If the problem is local to that user I would try openeng excel by typing this in the run command: outlook.exe /safe

Then try to open it. If it does not open I would look at the type of attachment and decide whether the software needed to open it was having an issue.
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ExpertAssistAuthor Commented:
I'm waiting for the customer to call me back.  I will let you know the results as soon as I hear from him.
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BCipolloneCommented:
*outlook not excel - multitasking has it's downfalls
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ExpertAssistAuthor Commented:
I logged onto the customer's workstation this morning and tried running Outlook in safe mode.  I was still unable to view the attachment.  I noticed that there was a message at the top of the window stating that Outlook was blocking the file.  The extension on the file being blocked was a .tmp.  The actual file that you see when the message is forwarded, is a .pdf file.  As I stated before, once you forward the message, the attachment can be viewed and opened.
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ExpertAssistAuthor Commented:
I'm going to have the customer view the e-mail via Outlook Web Access to determine if the attachment is viewable from OWA.
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ExpertAssistAuthor Commented:
The customer said that he can open from OWA, but not Outlook on his workstation.
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ExpertAssistAuthor Commented:
Does Ice Warp Mailer send an extra .tmp file with the original message?  I have seen a simular issue with winmail.dat files.
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ExpertAssistAuthor Commented:
I noticed that Outlook was blocking a .tmp file, so I tried unblocking the .tmp file.  After unblocking the .tmp file, the client was able to view the .pdf attachment.
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