PH/QI - The CCSO Nameserver

PH is an online electronic directory system, or "online phonebook". It is also sometimes referred to as the "CCSO Nameserver".

PH Client Software PH Server Software
Unix nph qi
X11 xph
Windows WinPH
Mac MacPH
The PH protocol is described in RFC 2378.

Mark Roth's sendmail Support Pages contain information on performing PH-based email redirection.


Jon Roma <roma+qi@uiuc.edu>
Mark D. Roth <roth+qi@uiuc.edu>
Last updated: April 19, 2004