Blocking .exe file in MAIL

Ubuntu 14.04.2 LTS (Trusty Tahr)
ISPConfig 3.0.5.4p5

i have problem with blocking .exe file when it come in mailbox.
I followed instructions from http://www.faqforge.com/linux/contr...-with-postfix-or-amavisd-new-and-ispconfig-3/ , and i see on log that amavis mark mail as Passed BANNED (if it is not .exe file it is marked as Passed CLEAN) but mail still come in inbox.

amavis[36445]: (36445-01) Passed BANNED (.exe,fzsftp.exe) {RelayedTaggedInbound}, Queue-ID: 4B7A1441582, Message-ID: <20150421210056.F2229651@>, mail_id: 8FFgQMQuuHZ9, Hits: -1.667, size: 333579, queued_as: 6BBEA442446, 537 ms
(some lines from log are removed)

what can i do to block these mails so they not come in inbox, and sender get message that mail is discarded.

tnx

 

tnx till
banned files lover was set on YES