Hi, I have a client that uses Outlook and Exchange 2010. There is a particular message sent weekly including an xls . When viewed with Outlook you can not see the attachment and there is no notice to say it was hidden, the sender is not being flagged as a junk sender etc however when using OWA the attachment is there. I recreated this with the assistance of the sender (because I can not re create this myself) using a difference Exchange org with different spam filters, same versions of Exch and Outlook and I get exactly the same but if I get the same sent to a Postfix box using mail.app I see the attachment. Antispam agents are not enabled. Its only this one xls email, the same sender can send PDFs ok and non attachment messages. Its not an AV thing, I checked rules in Outlook and looked at the Outlook registry seetings that would effect malicious attachment... but the latter is more like .exe and .com etc. Im a little out of ideas on this one so any help would be appreciated.
Thanks
Bob Murray