Pete posted a link via twitter that there is a bot that is changing addresses every 20 minutes and sending out large volumes of spam.
I haven't seen it in my own stats yet. J - Shaun From: Message Sniffer Community [mailto:email@example.com] On Behalf Of Peer-to-Peer (Spam-Filter.com) Sent: Friday, April 26, 2013 11:13 AM To: Message Sniffer Community Subject: [sniffer] Volume Just touching base with the list here. We're seeing a significant spike in traffic which started a few days ago. Today's volume is double / triple the norm. Anyone else seeing the same? --Paul