Google Groups thinks Nabble posts are "Possible Spam"?

[Geert Claes]

What can we do about this problem?  The Nabble forum is a member of a Google Group and achiving works fine.  Posting from Google Groups works fine too but posting from Nabble seems to get flagged as "Possible Spam" by Google Groups?  What can we do?

[Peter <Nabble>]

Can you please post the archive and the group link? We may have to check a few things.