Официальная страница: is the home of the InetPowerServer (IPS) project. The goal of the project is to deliver a highly efficient and scalable multi protocol server package to serve simple to very complex Internet, Intranet and/or Extranet solutions. You will find updated information about the project as well as the product itself on this site. The product itself can be downloaded from this site, online documentation, project status and more are available as well, enjoy!

Скачать дистрибутив для OS/2 и Windows можно по этой сслыке.

Документацию по IPS можно посмотреть здесь.

Так же доступны следующие утилиты: [OS2] CHOWN, CHGRP, CHMOD and LS GNU utilities adapted to work with IPS (OS/2 only) (c) Tom Wheeler, 1998 [OS2] OS/2 REXX plugin to verify IPS passwords externally (c) 2002
endmail ENDMAIL is an utility for IPS mail server for sending mail using command line. It can be used like "sendmail" replacement for software which use sendmail program for sending mail (e.g. PHP mail() function). Endmail will create message directly in IPS queue. So message will be delivered even if IPS mail relaying is disabled or IPS currently is not running.
Bogofilter Bogofilter is a mail filter that classifies mail as spam or ham (non-spam) by a statistical analysis of the message's header and content (body). Yuri Dario has ported Bogofilter  to OS/2 and made a package available which are adapted to work with IPS.