Virus & Spam filtering
As the internet industry growing rapidly so are the attacks on
the servers. CalKin Technology Inc. users experience the relief of knowing that they are more secure against spam and virus attacks. On-server-filtering (e.g. using GFI, "SpamAssassin", ClamAV or other spam/virus software) is relatively inexpensive for the hosting company, but has several drawbacks. Firstly, it places an extra footprint on the server and slows down or affects mailbox processing (UNIX, Windows-based and Exchange mails servers can be quite CPU intensive).

Secondly, and more importantly, on-server virus and spam systems are updated at the most every 24 hours (if the system admin has set them up correctly). This means that on the same day that a virus is released, your e-mails will be vulnerable for up to 24 hours.