As of October 17th, at 19:27 GMT, and again through daily updates, we are blocking all versions of CryptoLocker Ransomware (it has many different names).
MailRoute uses several anti-virus engines and switches regularly to those which are working best at the time. These are updated every 5 minutes.
Additionally, we filter any message that contains a zip file; we check the message but also open the zip and check contents.
Please contact firstname.lastname@example.org for more information.