Symantec Messaging Gateway (SMG) states that the Disarm feature under Malware - Scan Settings - Disarm, supports 'Office 2003', 'Office 2007 and above', and 'PDF' Content Types. However, you would like to know what file formats this encompasses.
At this time the SMG Disarm feature supports native Office file formats for Microsoft Word, Excel, PowerPoint, and Adobe PDF. This would include the following: