| Count | MTA |
|---|---|
| 391 | blocked |
| 254 | postfix |
| 133 | MS Exchange |
| 70 | barracuda |
| 39 | eSafe |
| 32 | unknown |
| 25 | Exim |
| 20 | Cisco |
| 18 | sendmail |
| 7 | mdaemon |
| 6 | qpsmtpd |
| 5 | Argosoft NT |
| 4 | TrendMicro Reputation |
| 3 | Kerio |
| 3 | MailEnable |
| 2 | IceWarp |
| 2 | Winmail |
| 1 | Mercury |
| 1 | qmail |
| 1 | Lotus Domino |
| 1 | SurgeSMTP |
| 1 | assp |
| 1019 | TOTAL |