MessageLabs Antispam 
According to MessageLabs Intelligence Report
figures, around 75% of world-wide email traffic is spam. If left
uncontrolled, this volume of unsolicited messages would add huge
costs to the processing, storage and control of email and make it
virtually unusable as a business tool.
The MessageLabs Email Antispam Service dramatically cuts the
amount of spam reaching your organization so that employees no
longer waste time reading and deleting spam and the processing,
storage and bandwidth costs associated with these unsolicited
emails is reduced.
MessageLabs Multi-layered Spam defenses

The MessageLabs Email Antispam Service employs a multi-layered
defence. At the perimeter of our infrastructure, innovative Traffic
and Connection Management capabilities identify, slow down and
reject known unwanted email.
The next spam barrier is commercial scanners
which stop known threats, and finally Skeptic™ identifies unknown
and new spam by using predictive technology incorporating thousands
of heuristics rules, Bayesian learning, smart signatures, fuzzy
fingerprinting and dynamic header analysis.
Skeptic™ learns from each message it
sees, evolving and updating in real time to actively protect
against the latest spam techniques while limiting the number of
false positives.
Clients have a range of completely
customisable handling options at their disposal for messages
identified as spam at the various layers of the service.
Intuitive administrator and end-user spam
quarantine tools provide for a flexible and productive antispam
experience.
Key features of MessageLabs Anti Spam
protection
Cobweb Hosted Exchange
Email is provided with MessageLabs Anti spam
and Anti virus protection, ensuring safe and secure email
communications for your business.