Problem with radiantstep3 group

Hi,

My posts are not getting through to the step 3 group. I've sent 2, one yesterday and one today, and I get a mailer-daemon saying the message couldn't go through and that I'm not a member of that group, even though I signed up a week ago and posted there successfully last week.

I went back to the original Yahoo groups page where I originally signed up and it tells me I am member.

Can anyone help?
Thanks!
Gigi