S4ndman (creator of S4ndmod) has made masterlist patches for RtCW 1.0, 1.0 with PB and 1.4b !
As everybody is well aware of by now, the RTCW server list has been down for some time. The future of the original RTCW masterserver does not look promising.
I create patches that will allow clients/players to still get a server list.
I would like to note that currently I am not hosting this server list. I have only created a pointer to another master server.

Instructions for Clients:
Download your type of RtCW version file and replace your current WolfMP.exe with it. (Make a backup of your old WolfMP.exe!!)

Instructions for RTCW Server admins !
All RtCW Server admins this will require you to add this to you (server)config file:
set sv_master5 "wolfmaster.s4ndmod.com"

RtCW List Patch 1.0

RtCW List Patch 1.0+PB

RtCW List Patch 1.4

Source: rtcw4ever | s4ndmod.com | forums.powervs.com