Hello,
there were some spam messages going through our mailing list filters. I was updating the filters on mailman, but there are new and new ideas coming from this guys.
Sorry for the pollution and I wanted to say that these messages are marked as spam by spamassasin, you can filter them locally as well looking for the header
X-Spam-Level: ***
You can adjust the number of '*'.
Some email services do that automatically, like gmail.com for example.
Of course, if anyone has better ideas of protection, please write here.
Cheers, Daniel