SPAM BOUNCER

SPAM Bouncer operates on our powerful mail server cluster, every email destined for your mailbox is scanned and checked by a number of different processes at the point of entry into our network.

How does it work?

Heuristics Engine
Thousands of tests check the message headers and content for tell tale signs of spam. The originating mail server and senders address are verified to prevent spoofing. We proactively monitor and adapt the tests used by SPAM Bouncer to any new techniques the spammers employ.

Bayesian Probability Algorithms
Bayesian algorithms are used to build up a database of the characteristics of unwanted mail and the characteristics of legitimate mail. The database can then be consulted to determine the likelihood of any particular message being spam. Furthermore, through continually analysing messages the database is actively updated as the nature of spam changes, creating a form of self evolving intelligence.

Checksum Databases
Any message has a unique checksum, as users report unsolicited mail messages, their checksums are added to a database. Several collaborative checksum databases are consulted to ascertain whether the message concerned matches one previously identified as spam by another Internet user.

Real Time Blackhole Lists
Several real time blackhole lists (RBLs) are maintained on the Internet which catalog known sources of spam. SPAM Bouncer checks for the presence of the originating mail servers in any of these lists.

Virus Scanner
All our hosting accounts include virus scanning as standard.. more...

Each positive test assigns a weighted score to the incoming message. The final score is used to determine whether or not the message is spam.

Back to the main spam bouncer webpage (click here).