Blocking attachments - Stopping sneaky employees

[Dhawal Doshy]

Jon Bates wrote:
>  
> I've got all audio and video type files being quarantined on my servers. 
> Some users are now getting smart to the fact that they can simply change 
> the extention on the file to bypass this system.
>  
> Is there some way to filter attachments based on the attachment mime 
> type or something? I've done a few hours searching and I havent come up 
> with a suitable answer.
>  
> Any guidance would be appreciated!

See the following configuration options in MailScanner.conf

File Command
Allow Filetypes
Deny Filetypes
Filetype Rules

See here for more description.
http://mailscanner.info/MailScanner.conf.index.html

- dhawal