Sometimes users come to you and say…I’ve got an attachement which is blocked by OWA. It says :
Outlook Web Access has blocked access to attachments. Blocked attachments: file.jpg, otherfile.otherextension.
When you need to configure (include or exclude) these extensions there is an easy way in Exchange 2007. Open the Exchange Management Console, go to Server Configuration -> Client Access.
Retrieve the properties of the virtual directory of OWA. Default = “owa (Default Web Site)”.
On the tab of Public or Private computers you must enable “Direct File Access”. Select the customize button.
Here you’re able to add extensions to allow or block. Also you need to make sure the correct MIME/type is added to the extension.
Very easy if you want to block .exe files (which is default) or allow .jpg files. More information about this subject can by found @ MSExchangeTeam and Microsoft
According to
http://technet.microsoft.com/en-us/library/bb12423(EXCHG.80).aspx
Not all attachments can be unblocked
Always Blocked
The following files are always blocked by Outlook Web Access, regardless of the file access settings in the Outlook Web Access virtual directory:
.mht files.
Non-XML file types that contain XML content.
If a user tries to open an allowed file type, not an XML file type, that contains any embedded XML, Outlook Web Access will block the file and not allow it to be opened or saved to the user’s local computer.
Outlook Web Access will block .mht files even if .mht is in the allowed files list. Files that are of the.mht type cannot be opened or saved to the user’s local computer.
Post a comment