Hi, I want to setup a email gateway to block different types of attachments (ex: exe, dll, bat, mov, mpeg etc..) for emails coming to different domains and then forward them with a message (append to the original message) to the down stream MTA using a single linux installation (no need to scan for viruses / SPAMs, however ability drop connections at RBL level is highly preferable because it'll reduce some load of the server). Can someone please suggest and provide configuration info to a such solution? If some one can come with a how to style doc that would be great. However detailed explanation is enough at the moment. Thanks in advance.