FOR IMMEDIATE RELEASE

Denes v1.1.2 Released by Deep Sky Technologies, Inc.

EIMS Filter for DNS Lookups Using Custom Rules

Vero Beach, FL - Monday, August 8th, 2005: Deep Sky Technologies, Inc.,
today announced the release of Denes v1.1.2 for Mac OS 9 and Mac OS X.
Denes is an EIMS filter for performing DNS lookups using custom rules and
criteria. This incremental update to Denes adds support for dynamically
reloading network configuration information and corrects a number of minor
bugs from previous releases.

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;
End 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, TXT, and CNAME
(transparently);
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;
MAIL FROM full email address;
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;
MAIL FROM full email address;
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 Reduplicator 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 web site at http://www.deepskytech.com/ .