We are running Exchange 2007 SP3, rollup 3v2, on Windows 2008 SP2. We are experiencing an issue where users from other systems send us emails with attachments such as PDF files, and they do not appear in Outlook. (Using Outlook 2010 by the way.) The sender of the mail indicated that an attachment was there but it did not appear to be. We found in investigation, that if we logged into Outlook Web Access that the attachment actually is there, and can be accessed from there. It would seem to me that in such a case, where OWA shows no issue that this is an Outlook issue, but investigating issues with Outlook has brough forth no resolution. Some attachments (usual example is PDF files) do appear in Outlook and others do not. I suspect that it is inline attachments that are not appearing. Not completely sure. If others are experiencing this or have seen this, I figure they may be able to offer help while we are investigating this. Thanks ahead of time. If anyone suggests updating or any patches, please let me know if you have seen this actually fix the problem. Thanks!