hi all, i want to block "doc" attachments with the content-filter. i've made following rule: Filter: MIME-Header Filter RegEx: /name=[^>]*\.(bat|com|exe|dll|doc|vbs)/ Action: WARN Files with the "doc" extension were blocked -> GOOD BUT Files with the "docx" extension were blocked ALSO -> BAD Both tests were logged in the logfile with WARN level. I've tested he REGEX in different ways. Always good. Any hints?!