Post.Office: Simple, Secure & Powerful
Now Available with Advanced Features

Santa Barbara, CA, February 24, 2004.

Post.Office 3.5.3 version 722, the premier mail server and lists server for Mac OS X, is now available as a free upgrade. Post.Office was originally designed to replace 'sendmail' with a mail server that was more secure and easier to manage. Because of its simplicity and its power, Post.Office was widely embraced around the world by ISPs supporting 10s of thousands of mailboxes on platforms like Solaris, Digital UNIX and NT. Under the auspices of their Japanese partner, Open Technologies, Tenon brought Openwave's well-regarded Post.Office to Apple's Mac OS X and extended it with an abundance of important new features.

Now that Tenon has modernized this robust package with Spam filtering, protection from open relay, and other needed features, such as IMAP4, POP-before-SMTP and SMTP-Auth, longstanding Post.Office users are transitioning to Apple's Mac OS X. Tenon sells Post.Office as a downloadable software package for installation on Mac OS X desktops or as a turn-key server on a Panther Xserve box. Customers on non-Mac platforms can even daisy-chain their existing Post.Office non-Mac servers with Mac OS X boxes. Another alternative, for non-Mac Post.Office users, is to keep their mailboxes on existing Network Appliances, but to upgrade their processor with Apple hardware and the latest Post.Office package from Tenon. Post.Office customers on non-Mac platforms are encouraged to call Tenon for analysis, support, and system upgrades.

The SpamAssassin plug-in that was added last fall, has excited the imagination of the Mac OS X user base. One customer, Jochen Savelberg, IT Director and Online Producer, Euregio.Net, says, "Post.Office provided features that I've always wanted on our sendmail servers but never figured out how to implement." "With the addition of SpamAssassin," he continues, "the system now blocks around 70% of unwanted mail."

Mr. Savelberg has further added to Post.Office's value by contributing a script, now widely used by Tenon's Post.Office customers. The script runs in conjunction with McAfee's Virex as a daemon that is launched on system restart. In addition to scanning messages for viruses, the script includes a number of scanning options that include discovering unwelcome file attachments; rewriting subject lines to "Careful Attachments", for attachment you allow, but which still look suspicious; moving suspicious messages to a quarantine folder, etc. Savelberg's script includes a configurator/wizard to allow you to set up your scanning preferences (

A customer-maintained "Post.Office Stop SPAM" Wiki site ( is also available for Post.Office users who are serious about fighting Spam. And Tenon has added powerful logging analysis to its companion web server administration product, iTools. So customers with iTools and Post.Office on the same box can generate a graphical history of mail traffic.

Post.Office is offered on a sliding scale, depending upon how many mailboxes and mailing lists are needed. A starter package is available for $295, supporting 100 mailboxes and 10 lists. Mailboxes or lists can be purchased in blocks of 100 for $150 ($75 educational). For thousands of mailboxes, a range of packages are available to cater to Universities, corporate enterprises, and ISPs. Wed-based mail clients are also available as add-on packages. For 10 accounts or less, Post.Office is free! Check the Tenon web site () for details and special offers.

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