How to configure fonts on a remote X connection (XDMCP vs. ssh)?

Connecting to a remote Solaris 10 system over X11 I observe inconsistent behavior regarding the used fonts. I am connecting from a Cygwin/X system. When I connect using ssh forwarding like this $ ssh -Y mymachine.example.org fonts work as expected, i.e. the rendering is very nice and programs seem to find all kind of different fonts (e.g. gvim or emacs). When I connect to the same machine via XDMCP (to the stock blue Solaris 10 login manager screen) and login there seems only 1 fixed size font available. An Emacs from OpenCSW even fails to execute because it can't find the fonts it needs. It prints that it can't find a font using following specification: -dt-interface user-medium-r-normal-m I establish the XDMCP connection like this: $ XWin -query mymachine.example.org -from mywindowsclient.example.org My objective is no to get also proper fonts for the XDMCP use case. How can I investigate this issue? Can I duplicate some configuration which is implicitly used with ssh -Y for the XDMCP case? How is the font-thing usually setup during ssh-X11-forwarding?