| Count | MTA |
|---|---|
| 3099 | postfix |
| 770 | blocked |
| 72 | MS Exchange |
| 46 | mdaemon |
| 26 | Exim |
| 20 | Cisco |
| 20 | unknown |
| 8 | eSafe |
| 6 | barracuda |
| 6 | TrendMicro Reputation |
| 3 | MailEnable |
| 3 | Lotus Domino |
| 3 | sendmail |
| 2 | qmail |
| 1 | SonicWALL |
| 1 | Kerio |
| 1 | merak |
| 1 | IceWarp |
| 1 | XWall/Exchange |
| 1 | communigate |
| 1 | MikroTik |
| 4091 | TOTAL |