During setup and installation of MapServer, there are different ways to get some help. These include commercial support, mailing lists, and an Internet relay chat (IRC) channel.
The main web site with documentation is at http://mapserver.gis.umn.edu.
An FAQ is available at http://mapserver.gis.umn.edu/doc/mapserver-FAQ.html.
Bug tracking/reporting can be found at http://mapserver.gis.umn.edu/bugs/index.cgi.
Look for MapServer users at http://lists.umn.edu/archives/mapserver-users.html.
Find older archives at http://mapserver.gis.umn.edu/cgi-bin/wilma/mapserver-users.
Check out a searchable GMANE archive at http://dir.gmane.org/gmane.comp.gis.mapserver.user.
Find MapServer-dev at http://lists.gis.umn.edu/mailman/listinfo/mapserver-dev.
Look for #mapserver at irc.freenode.net.
A map of other users/consultants is at http://moximedia.com/imf-ows/imf.jsp?site=ms_users.
A support site that includes MapServer category is at http://www.findopensourcesupport.com.
Check out the Mapping Hacks book (O’Reilly) at http://mappinghacks.com.
Table 4-2 lists commercial options for support or development of MapServer applications.