Stop .Jar attachments - Exim filter

Hello, I copied the original "cpanel_exim_system_filter" and saved it with the name "cpanel_system_filter_new". I added the .jar extension for the attachments (see attached screenshot). I send mail with an .jar attachment and everything works well and I get the Mailer Daemon blocking message. The problem is when I try to send mail with an attached .jar and a signature in mail. The message not block from exim and come in mailbox without any problem. I think the problem is why I have logo of my company and exim check this image as an attached file that is .jpg not .jar and not block message.