Owl River Company

Your IP is: 38.107.191.113

We have been active from the start with the DSBL (and before that the predecessor ORBZ [domain has expired - link removed]) anti-Open Relay, anti-spam identification tool.

Such tools, called "Realtime Block List (RBL)" tools, are used by email transfer ("SMTP") programs such as sendmail, Microsoft Exchange, IBM Lotus Notes, postfix, and qmail, to identify potential 'spam.'

The 'spam' (also called "Unsolicited Commercial Email") is a tide of extremely low cost-to-send solitication email, which threatens to overwhelm email transfer programs. In a November 2001 post-analysis which we performed for a mailserver cluster we designed, implemented and adminster over 70,000 pieces of a sample of 250,000 total received were properly identified as from a so-called direct 'Open Relay'. The ORBZ ruleset produced zero false positives in that analysis set. <advt>We also sell support -- see the bottom of this page.</advt>

     The DSBL project tools make a spam determination, based on the objective prior history of a given mailserver's demonstrated capacity for abuse. We actively participate in the design, maintenance, and support of installations across the US which use the tool, and indeed, we use it ourselves.

     Because of this, potential clients who are listed are sometimes unable to send us email. Accordingly, we offer a technical support and a contact web browser-based form.

We sell this commercial support, on a remote access basis worldwide, or a site present basis in the Western Hemisphere. If your organization is struggling with these issues, please contact us for a quote.

See also: Message Wall spam, virus and worm content based filtering system
              Our spam policy
              Our Email support page
              Our tips archive
              Reading 'full headers'
              (External) RFC 2821
              (Local copy) Configuring Exchange to conform to RFC 2821 postmaster@[x.y.z.a] addressing
    (Local copy) Road Runner scanning and response
              (External) Windows 2000 mail services, terminal services deprecated in NSA guidelines - (local links and copies)

Last modified: Mon, 14 Mar 2005 12:39:04 -0500
http://www.owlriver.com/dsbl/index.php