Anti-Spam

• Server based Anti-Spam to cover all mailbox users
• Individual Black and White Lists
• Wizard Driven Rollout
• False-positive errors are kept to an absolute minimum
• Remains highly effective over time
• Requires minimal user maintenance
• Challenge Response Capability.

Anti-Spam

The Exclaimer Mail Utilities 2007 Anti-Spam feature uses a handful of very effective techniques to ensure that the maximum quantity of spam is trapped whilst at the same time minimising False Positives.  In our tests, we have been blocking 99% of incoming junk mail whilst at the same time enjoying a 0.001% false positive rate.

We do not use techniques that other Anti-Spam vendors use as time has shown many of them to be inadequate in dealing with the ever changing face of spam.

Stop it soon

The Exclaimer Mail Utilities 2007 front line of defense is a collection of tests that stop huge swaths of Spam, Viruses, Trojans and the like by simply refusing to communicate with them.  Despite their attempts to have an unhindered conversation with your mail server, they can't help identifying their nature and this gets them blocked.

Spam sources and compromised systems

The next line of defense comes from checking that the incoming mail is not coming from a known Spam source or from a machine that has been compromised by being infected with a Trojan or other spamming tool.

Detection centre

Exclaimer Mail Utilities 2007 has a dedicated detection centre that is the last line in defense.  After all other tests have been performed directly on your mail system, the email's unique fingerprint is passed to our detection centre to see if similar messages have been delivered elsewhere, if they have, then they may be spam and the message is subjected to closer scrutiny.  It might even be delayed a while to see if other similar emails are being delivered in other places around the world.  If they are, then it's classified as spam.

No content analysis

Looking at what is in the message has been perhaps the first choice of anyone wanting to block spam, and yet has been the least effective and most prone to fault.  Exclaimer Mail Utilities 2007 does not check the content of the message.  This allows it to be language independent.  Content analysis along with Bayesian filters, content heuristics all have transient success and whilst they seem to be working well to start with, after a while, the spamming community adapts and gets around the filters (often getting more mail through than before the filter was installed). How many times have you had to either update your anti-spam software or download new "antibodies" from the authors, or install a completely new Anti-Spam product as the last one was not working any longer?

Where is it from?  And, where is it sending you?

The crux of Exclaimer Mail Utilities 2007's technology is encapsulated in the heading.  We are simply concerned with where the message came from and where it's trying to send you.  If it came from a known spam source, then it's condemned.  If it's sending you to a website that has been advertised in a spam email (spamvertised), then it's condemned too.

Black & White lists

We don't think you'll need to use the blacklist, but the whitelist will allow you to ensure that business critical messages have no chance of being blocked.  Our simple-to-use searching system removes the need for you or your users to delve deep into internet headers just to whitelist a message or two.

Wizard driven rollout

We understand how to get Anti-Spam software deployed in your environment and for that reason we've developed the rollout wizard.  Using this tool, rolling Exclaimer Mail Utilities 2007's Anti-Spam solution out takes a few minutes and is immediately effective.  No infrastructure changes are required.

SPF/SenderID

SPF (Sender Policy Framework) and Microsoft's SenderID are not Anti-Spam technologies, they are email forgery prevention techniques.  These techniques do not block any significant quantity of spam, but they do permit the detection of forged messages.  SPF protects the envelope sender and SenderID protects the message sender.  

Exclaimer Mail Utilities 2007 uses SPF to protect your whitelist entries.  If you choose to whitelist someone and you want to ensure that a spammer can't hijack that domain to start sending you spam and the envelope sender publishes an SPF policy, Exclaimer Mail Utilities 2007 can enforce that to ensure that only that sender can get through the whitelist entry.

Exclaimer Mail Utilities 2007 also uses SPF to block messages that are verifiable forgeries.  As the number of domains that publish SPF records increases, we expect to see the number of blocks increase in the short term.  However, spammers are smart and will simply stop forging the domains of people who do publish SPF records which will result in a significant reduction in the strange and odd NDRs that many people receive (ever got a message saying that your email wasn't delivered and you never even sent the message - well that's one of the things that SPF will prevent).

When the Microsoft SenderID specification is complete, Exclaimer Mail Utilities 2007 will issue a slipstream release to support this technology.

Next Page - Virus Protection