I'm using dotnetopenauth to implement openid functionality, and it is working fine. However, yahoo displays the standard 'yahoo cannot verify this site' message, which throws off some users. There's some info on fixing this problem, but I would think that I should use DNOA to do it, rather than wing it.
I found some info on why this may be happening, but was hoping that there's a way to configure DNOA to handle this on its own.