| Count | MTA |
|---|---|
| 6718 | postfix |
| 2616 | Exim |
| 1480 | unknown |
| 765 | blocked |
| 667 | MS Exchange |
| 613 | sendmail |
| 228 | qmail |
| 185 | Cisco |
| 145 | eSafe |
| 134 | barracuda |
| 113 | mdaemon |
| 75 | MailEnable |
| 28 | TrendMicro Reputation |
| 22 | Lotus Domino |
| 16 | Kerio |
| 10 | IceWarp |
| 9 | qpsmtpd |
| 8 | assp |
| 6 | Argosoft NT |
| 5 | merak |
| 4 | SonicWALL |
| 4 | rblsmtpd |
| 4 | XMail |
| 4 | communigate |
| 3 | Mercury |
| 3 | imail |
| 3 | Novell Groupwise |
| 2 | CheckPoint FW |
| 2 | Hurricane |
| 1 | Winmail |
| 1 | DeskNow |
| 1 | $1 |
| 1 | VHCS |
| 1 | CCProxy |
| 1 | Sun JSMS |
| 1 | Scalix |
| 1 | Symantec AVGate |
| 1 | spamsniper |
| 13881 | TOTAL |