can't get outgoing DomainKeys working

Hi-

(Sorry, there was a minor error in my previous newsgroup post, so I'm resending it.)

I can't seem to get outgoing domain keys working for my test domain at "test.mymailout.com"

on version 3.8f3-3.

I have generated a key as per the instructions, set it up in my DNS, and turned 
g_domain_keys_sign on.  However, when I send an email using my test.mymailout.com">miketest.mymailout.com 
from that machine, it doesn't sign it at all.  According to http://domainkeys.sourceforge.net/ 
my setup seems to be ok.

Incidentally, on the "Configure DomainKeys" page, the refresh doesn't work in Firefox
when I change the "Select to display current DNS..." select box.

Any idea what's wrong?  Since I'm not getting an error, I don't quite know what else
to do.

Thanks,

-Mike