Improved blockade SURFmailfilter
As you may know, the University of Twente uses the anti-spam and anti-virus scanning that SURFnet provides under the heading SURFmailfilter for several years now. Through https://www.utwente.nl/lisa/en/intranet/abuse/ you can see what impact this has on the filtering of spam and viruses that we receive in our mailboxes.
Since last week SURFnet improved the blockade of so called ransomware by blocking certain frequently used files. Since the activation of this blockade more than 60,000 messages have been blocked.
One other common annoyance is the amount of KPN phishing ("factuur/invoice") messages. These are more difficult to block, if you do not want to block the legitimate e-mails from KPN. However SURFnet is working on a solution to block these illegal messages also.