Advanced Spam & Virus Filtering

Our filtering solution was designed to facilitate communication among legitimate users while removing Spam & Viruses with an accuranec of 99%+. Here's how we achieve that:

Local messages

Messages sent among users of the same domain are never filtered for Spam, but will be checked for Viruses. This helps prevent Virus outbreaks within organizations while eliminating internal false positives.

Automatic whitelisting

Our system detects the people that you communicate most often with and will automatically whitelist your recipient on the way back, bypassing all Spam filters. The Virus filtering is still active however.

Outbound messages

Our service never filters outbound e-mail messages sent to remote recipients. There is therefore no worry that messages might be discarded from our end.

Inbound messages

Incoming e-mail messages are filtered through several layers before arriving in your Inbox or Spam folder:

RBL check of the sender IP
Whitelist/Blacklist verification
Content verification against known Viruses
Content verification against known Spam keywords
Content verification against known Spam links
Bayesian analysis of the message
Preference checking ( Sensitivity, Delivery location )

In order to declutter your Spam folder, PolarisMail has implemented the Spam and HardSpam folders. Messages for which we are more than 70% sure they are Spam will be sent over to the HardSpam folder. Messages for which we are 50%-70% confident they are Spam, will be going to the Spam folder. This makes reviewing your Spam folder a breeze since you have much less messages to look at.

The filtering system can be configured individually or domain-wide by an administrator. Individual preferences will always override domain-wide settings. Here are some of the settings you can adjust:

Filter sensitivity
Spam delivery ( Inbox, Spam, Delete )
HardSpam definition
Number of Days to keep Spam messages
Whitelists & Blacklists
Spam Review Monitor

Retraining Messages

Messages that were incorrectly classified can easily be retrained through two methods:

Moving the message from the Inbox to the Spam folder or vice-versa
Creating a spam/notspam@domain.com address where you can forward the message to be retrained

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Contact

Toll Free

1 888 493 6245

info@polarismail.com

International

1 514 667 9794

Fax: 1 408 731 9101