Third partie forwarded email attachments are not being received in SugarCRM Open Source.
Is this normal ?; is this a bug?; is there a fix or workaround?

For example:
Joe forwards email with attachment to Sue,
Sue forwards email with attachment to Chris who is a SugarCRM user,
Chris receives Sue's email without attachment

SugarCRM 4.5.1d
Linux Centos 4.4