While sending excel sheets to some clients through email (its not happening to every one), the email gets delivered however the attachement gets deleted. Their network team sent us following reason.
“We have checked the gateway and the reason is the attached Excel file , it has the following in the logs of the gateway " The Compound Document File contained a Stream with an invalid FAT chain. "
We are using CDO.Interop for sending emails.
Any suggestions, why this is happening?