BAD signature woes

[oxfordmusic.net <li...@ox...>]

Not sure if this is the right place or if I should post this to 
[domainkeys-interop].

I have dk-milter 0.6.0 set up with sendmail and it all seems to be signing 
my messages ok. Only problem is when I try and send to the 
sa...@se... reflector I get a BAD signature. I have set DKDEBUG to 
c to save the canonicalized headers on the server and when I diff the 
failure report from sendmail with the debug output I get this:
[root@botley tmp]# diff -b dk.30860.BGle2h failure.txt
12,13d11
<
< dktest

The differences shown are the body of the email as displayed in the debug 
output file (I assume it's NOT using this to form the signature). In other 
words, it looks like the headers are identical. Any ideas what else might be 
going wrong? I've do a selector and policy check and they both look ok.

TIA
Andy