


The information is collected from the SenderBase service running on our DMZMessaging servers. IronPort SenderBase(r) Network is the world's first, biggest and best traffic monitoring network. SenderBase measures more than 25 percent of the world's messaging traffic - receiving over five billion queries per day. Currently, over 100,000 organizations participate in IronPort's SenderBase Network, making it the industry's most accurate reputation system.
| Connections < 100 are coloured in cyan | |
| Between 100 and 500 connections are blue | |
| Large volumes between 500 and 2500 are marked in black | |
| Heavy offenders connecting more than 2500 times in a day are represented by a red pentagram |