I'm facing some strange behavior with Outlook. Outlook seems to changes the attached files that I send. The content of the file remains the same but the file size increase by 1-3 Kb (differ from one file to the other).
Below more details regarding this issue.
Problem description:
In Outlook 2003, sending an email with an attachment modifies the sent attachment. Files are increased by 500-1000 bytes
More details:
- This happens only with Microsoft Office files.
- This happens even if the mail is sent to myself.
- The Sent folder contain a copy of the sent email where its attachment has been modified.
- Files are not modified if using the attached file extension is changed (from . Doc to . Bin for example)
- I an running Windows XP OS, Outlook 2003 SP3.
- I made sure that all the option tools->email options-> advanced-> Add properties... Is set to off.
- Right clicking for properties, details provide no new information.
comparing the before file and after file reveals that outlook changed a few bytes in the beginning of files and added lots of bytes at the end of the file. I notice the words "root entry" and "summery information...".
- Does anyone know why outlook changes the files?
- Other than DOC, XLS, PPT are there any more types of file that are altered.
- How can it be configured to stop this behavior.