Attachment Type Blocklist
Attachment filename extensions are validated against a blocklist of extensions that are considered potentially harmful.
Insight 5 blocks the ability to upload or download attachments with blocklisted filename extensions. These can be adding the following option to the server
config.properties file, and including the extensions you wish to block as a comma separated list.
insight.server.client.attachments.denied-file-extensions=jsp,gif,rar,exe,php,phtml,phps,xlsm,xltm,xlm,vbs,vbe,vb,vbscript,asp,aspx,swf,xsd,sh,bat,ps1,dll,lib,bin,war,tar,tga,iso,tiff,java,js,jse,cpp,c,cc,css,class,conf,rpm,apk,pkl