Acute spam wave via Google Groups?
I'm currently observing this on multiple servers and many domains. Bounces distributed via bh.ipetecnologia.net (MX entry for smtp.google.com). It's a Google Groups mailing list, and the sending hosts are real (mostly out-of-office messages). I don't really understand what's going on. It looks like spam emails are being sent from jdgesde@bh.ipetecnologia.net, and the bounces from those…