The list below describes the features of ORF Enterprise Edition in details. Please select the feature that you are interested in to learn more about it.

 

 

• Filtering based on DNS blacklists
  ORF Enterprise Edition supports using multiple DNS blacklists at the same time for spam filtering, which greatly reduces administration costs and provides high spam filtering effectivity. ORF is shipped with a predefined set of selected DNS blacklist definitions, but users can also extend the definitions.
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• Attachment and keyword filtering
  Using the attachment filter you can drop emails with malicious attachments or replace them with a customisable warning text. Both the keyword and the attachment filtering support using Perl-compatible regular expressions, which makes the filtering extremely flexible. Both features are Unicode-aware, so you can block emails with foreign charsets or words with accented characters.
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• Active Directory integration
  Unlike other mail servers, Exchange 2000 does not reject emails addressed to local recipients that does not exist. Exchange 2000 accepts the mail for delivery and bounces the email later if the recipient user does not exist. Spam is often sent with fake sender email address that does not exist to recipients that are no longer valid, which results in tons of NDR's filling up the mail queue.
  Using the ORF's Active Directory integration you can reject incoming emails addressed to local mailboxes that are no longer (or never been) valid.
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• Reviewing emails caught by the filter
  The blacklist actions are customizable, the blacklisted emails can be dropped, redirected to a specific email address or they can can be tagged (header or subject) with a customizable indicator of spam(*). These tagged emails can be moved to separate folders automatically by Microsoft® Outlook at the users for later review.
   

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  * On Arrival filtering point only
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• Dual filtering points model
  ORF's unique ability is to filter emails both before email arrival and on email arrival. Blacklist tests performed by ORF can be assigned to the Before Arrival, the On Arrival or both filtering points. It is useful, for example, to bounce emails sent to non-existent local recipients before arrival, while performing DNS blacklist tests at the On Arrival filtering point provide you the ability of reviewing emails caught by the DNS blacklists. More about filtering points is available in the FAQ.
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• Logging and monitoring
  ORF provides detailed, customisable logs about its activity. Multiple log destinations are supported (text log, Windows Event Log, BSD syslog and email notifications). ORF text logs can be viewed by any text file viewer or by ORF's built-in log viewer tool, which also provides powerful searching and filtering features.
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• Real-time statistics
  The Enterprise Edition provides real-time statistics about its activity. Statistics can be sent automatically to our company which creates DNS blacklist popularity statistics from user reports. These statistics can be viewed on our website (see DNS blacklist statistics).
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• IP blacklist, sender and recipient email blacklists
  ORF allows you to block specific IP addresses (and IP ranges), message senders or message recipients (local mailboxes) as determined in the blacklists.
  The IP blacklist supports both IP addresses and subnet definitions. Addresses on the sender/recipient blacklist can be defined by either the address, simple wildcarded mask or Perl-compatible regular expression.
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• IP whitelist, sender and recipient email whitelists
  The IP and sender address whitelist can be used to exclude specific email sources from filtering (e.g. business partners), while the recipient whitelist provides an easy way to exclude specific local mailboxes from filtering.
  The IP whitelist supports both IP addresses and subnet definitions. Addresses on the sender/recipient whitelist can be defined by either the address, simple wildcarded mask or Perl-compatible regular expression.
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• Reverse DNS test
  Using the reverse DNS (RDNS) test you can reject emails coming from fake, non-existent domains.
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• Bonded Sender™ Program DNS whitelist support
  IronPort Systems Inc's Bonded Sender™ Program provides a public DNS whitelist. ORF can use this whitelist to recognize trusted senders.
  More information about this program is available at http://www.bondedsender.org.
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• DNS cache
  The Enterprise Edition can keep the DNS lookup results in an internal cache for a user-specified period of time. This saves you bandwidth and increases spam filtering speed.
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• Exportable/importable lists
  The IP, sender and recipient whitelists and blacklists can be exported/imported to and from various text formats, including CSV which can be imported by Microsoft® Excel®. DNS blacklist definitions, keyword and attachment filtering expression can be exported/imported in XML format.