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Denes v1.1.0 Released by Deep Sky Technologies, Inc.

EIMS Filter for DNS Lookups Using Custom Rules

Vero Beach, FL - Wednesday, March 9th, 2005: Deep Sky Technologies, Inc., today announced the release of Denes v1.1.0 for Mac OS 9 and Mac OS X. Denes is an EIMS filter for performing DNS lookups using custom rules and criteria. This major update to the highly popular Denes filter adds support for all possible NS record types for the generation of complex rules for filtering email.

Denes is an EIMS filter for taking actions on email based on DNS lookups using custom rules and criteria. Denes allows email to be accepted or denied based on DNS lookups, making full support for DNS based black lists and white lists available in a single filter; there is even a simple test mode to log DNS lookups without actually denying or accepting email.

The most convenient feature of the Denes rules document is that it dynamically reloads after any changes made in it. This means, Denes rules can be added, modified, and/or deleted without having to quit EIMS and launch it again. When any changes to the rules document are detected, Denes will reload the rules for subsequent use in the filter.

Features in Denes

The Denes filter has the following features and options that can be easily customized for individual needs:

  • Full, user definable management of all SMTP connections;
  • Custom path to rules document;
  • Intelligent, dynamic reloading of changed rules document;
  • Limitless number of DNS lookups within rules document;
  • Settable rules names;
  • Lookup domains fully customizable in rules document;
  • Support for substitions in lookup domains, including:
    • Remote IP;
    • HELO/EHLO identifier;
    • MAIL FROM username;
    • MAIL FROM domain;
    • RCPT TO username;
    • RCPT TO domain;
    • TLD+1 calculations;
  • Match operators for comparisons in rule determinations, including:
    • IP match with significant bits;
    • Equals;
    • Begins with;
    • Ends with;
    • Contains;
    • MX and IP existence (for SMTP delivery);
    • Existence checking;
    • Negations on all operators;
  • Per rule setting for only checking non-authenticated and/or authenticated SMTP connections;
  • Per rule setting for using native or more powerful custom Domain Name Resolver (DNR);
  • Support for NS records of type X, MX, PTR, and TXT;
  • Discrete actions to take as result of DNS lookup matches include:
    • Deny email;
    • Allow email;
    • Make error log entry;
  • Custom response codes for SMTP transaction actions;
  • Per rule setting for error log entries;
  • Settings per rule for error log entries support substitution values for:
    • Rule name;
    • Remote IP;
    • Full lookup domain;
    • HELO/EHLO identifier;
    • MAIL FROM username;
    • MAIL FROM domain;
    • RCPT TO username;
    • RCPT TO domain;
    • Lookup result;
    • Lookup time, in milliseconds;
    • TLD+1 calculations;
  • Settings per rule for responses to SMTP transactions support substitution values for:
    • Rule name;
    • Remote IP;
    • Full lookup domain;
    • HELO/EHLO identifier;
    • MAIL FROM username;
    • MAIL FROM domain;
    • RCPT TO username;
    • RCPT TO domain;
    • Lookup result;
    • Lookup time, in milliseconds;
    • TLD+1 calculations;
  • Host name following for MX and PTR lookups and subsequent comparisons;
  • Dynamically and automatically reload any DNS settings changes without need to relaunch;
  • Support for standard and custom DNS Exclusions document;
  • Definable match results for each rule;
  • Lookup redundancies intelligently elimitated directly in filter for maximum efficiency;
  • Definable default responses to SMTP transactions;
  • Settable default error log entry;
  • Choice to deny after MAIL FROM or DATA sections of SMTP transactions;
  • Special configuration for handling empty MAIL FROM in lookups;
  • Operation of multiple rules on single email;
  • Does not interrupt operation of EIMS;
  • No quitting of EIMS application required for rule changes;
  • Compatibility with Mac OS 9 and Mac OS X;
  • Compatibility with EIMS and EIMS X;
  • Email notification of error conditions.

All of the functionality available within the Denes filter is customizable to match the exact needs of the EIMS administrator. Any criteria for matching SMTP connections for DNS lookups is available within the Denes filter.

Pricing and Availability

The pricing for the different licensing options available for Denes are as follows:

2 CPU License $60.00
5 CPU License $120.00
10 CPU License $200.00

Renewals for Denes licenses are available at a discounted price:

2 CPU License $30.00
5 CPU License $60.00
10 CPU License $100.00

* All prices are in US dollars.

Denes can be licensed directly from Deep Sky Technologies, Inc. Information about and purchases can be made online at:

     http://www.deepskytech.com/prod_eimsfilters/denes/

About Deep Sky Technologies, Inc.

Based in Vero Beach, Florida, Deep Sky Technologies, Inc., provides software development, consulting, hosting, and colocation services. Founded in 1997, Deep Sky Technologies, Inc., develops and supports a wide variety of software development tools and services to aid in the creation of custom applications and web sites for the Macintosh and Windows platform. For more information, please visit our home page at http://www.deepskytech.com/.

For more information contact:

Steven G. Willis
President, Deep Sky Technologies, Inc.
sgwillis@deepskytech.com
http://www.deepskytech.com/
772.794.9494

You can also join the Deep Sky Technologies, Inc., announcement mailing list. Subscriptions can be placed online at:

     http://www.deepskytech.com/mailinglist_signup.html

You can also join the EIMS-3PL mailing list, the single best source for EIMS related information for third parties online:

     http://www.deepskytech.com/lists.html

All trade names referenced in this document are the trademark or registered trademark of their respective holder.

Denes and Denes X are copyright Deep Sky Technologies, Inc.

Macintosh, Mac OS, and Mac OS X are trademarks of Apple Computer, Inc.

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