Thanks for reply, could you please inform as to how you have applied the different file type. We want to block .flv, 3gp etc. files and other formats that are not in the Media drop down list on the Ironport appliance.

thanks

We have a Content Filter setup called Media Files, in order to stop the files that you want to I would have added the following conditions:

Attachment File Info - Filename - Contains - (?i)\.flv

You have a couple of options, instead of using the "contains" from the drop down list, you could used "Ends With". However this then means that you would stop a file called:

skateboarding_dog.flv

You wouldn't however stop a file called:

skateboarding_dog.flv.txt

This is why we have used the "Contains" option. This can in some cases casue issues with false positives with some file extensions that may form part of a normally named file.

We also use a separate condition for each file type we are looking for. You could use the OR function, but I had a real headache getting my head round it, so we went with a single Condition for each file type.

Hope this helps.