Lynx: how to use -auth flag when username contains domain?

I have a prob开发者_Python百科lem with Lynx. I'm trying to log in on a web page using the -auth flag. The line I use is

lynx -accept_all_cookies -auth=mydomain\myuser:mypass 
http://ultracooldomain.com/default.aspx

This does not seem to work. What am I doing wrong (if I login with the same user/pass combination in Lynx it works)?

Thanks Nocklas

Solved it using -auth=mydomain\\myuser:mypass