| Count | MTA |
|---|---|
| 970 | postfix |
| 454 | blocked |
| 432 | MS Exchange |
| 188 | Exim |
| 77 | sendmail |
| 69 | eSafe |
| 65 | unknown |
| 47 | Cisco |
| 42 | mdaemon |
| 37 | barracuda |
| 23 | qmail |
| 19 | Mercury |
| 18 | TrendMicro Reputation |
| 13 | Sophos |
| 11 | qpsmtpd |
| 8 | communigate |
| 8 | MailEnable |
| 8 | Lotus Domino |
| 6 | rblsmtpd |
| 5 | Kerio |
| 3 | merak |
| 1 | IceWarp |
| 1 | Argosoft NT |
| 1 | SurgeSMTP |
| 2506 | TOTAL |