Top Spammers

• Rejected Messages
  E-Mail whose score is so high that PerfectMail refuses to forward it.
• RBL Senders
  Any message originating from a known industrial-spam source (network or server). Note that known good e-mail servers who are temporarily compromised are usually not included in this list.
• Miners
  Miners are remote hosts who participate in guessing attacks on your mail server. A guessing attack is where the remote host constantly queries your server hoping to guess valid e-mail addresses. Since this activity accounts for more than 75% of most e-mail traffic, and it can cripple a legitimate mail server, we consider this activity as malicious.

By default, we sort, descending by the activity. It is not uncommon to see that the vast majority of malicious traffic comes from a relatively small number of systems.

Notes

• We only plot the top 50 sources of unwanted e-mail traffic. However, PerfectMail's reputation system retains information on all sources of unwanted traffic.
• It may take some time for this graph to fully populate with data. PerfectMail doesn't plot any host that has less than 50 malicious connections. Furthermore, to end up on this graph, a host must score more than 95% unwanted for all connection attempts.
• It is very common for multiple hosts from the same network to participate in a mining attack against your mail server. This behavior is visible at the bottom of the graphic. Hosts with IP 64.12.138.21 and 64.12.138.22 are attacking our development PerfectMail server!
• Records may be sorted by any field. Simply click one of the field names (IP Address, Miner, RBL or Connections.
• Click any column header a second time to sort in reverse order (ascending instead of descending).
• Any time a Email Report To button appears, you can type in the e-mail address of any user (local or on the Internet) and the report will be e-mailed to that user in PDF format.
• If you wish to see this report in PDF format (so you can save it or print it), click the Download Report link. Current sort order is preserved during PDF generation.

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