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Cannot open some pdf or xls attachments, ut others open

We experience a strange problem. Some mail with pdf, xls and/or xlsx attachments is not received by outlook. They appear in the Outlook inbox but the disappear. There are no rules activated! When we lookup these mail in OWA the mail has been transferred to the OWA folder Problems with synchronistation, server errors. So the mail is not visible in Outlook but is visible in OWA. It's not the extension because other mail with pdf, xls or xlsx does arrive without a problem. It's not the antivirissoftware because we have disabled that software.

The server is a SBS 2003, clients use Outlook 2003 and 2010. Both clients have the problem.

tonyperth

Do the attachments have the same name? I had an issue with a user not receiving attachments called fax.pdf which turned out to be an issue with the OLK file filling up with 99 versions of fax, i.e. called fax(99).pdf. The only way to fix it was to clear the cache.

equa

ASKER

Changing the name didn't make any difference
I receive the mail in OWA but can not open the attachment.
I do not receive the mail in Outlook

equa

ASKER

The message which contain attachments that can't be opened are placed in a special Outlook Folder: Synchronisation Errors\Server Errors. It is possible to read the mail but it is not possible to open or save the attachment. Does anyone know a solution?

ASKER CERTIFIED SOLUTION

equa

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equa

ASKER

Nobody supllied any useful help