| Count | MTA |
|---|---|
| 505 | postfix |
| 312 | unknown |
| 308 | MS Exchange |
| 299 | mdaemon |
| 235 | blocked |
| 104 | MailEnable |
| 87 | Cisco |
| 74 | Exim |
| 63 | sendmail |
| 37 | barracuda |
| 19 | Lotus Domino |
| 17 | rblsmtpd |
| 13 | Kerio |
| 12 | eSafe |
| 10 | qmail |
| 5 | imail |
| 3 | qpsmtpd |
| 3 | XMail |
| 1 | vpop3 |
| 1 | IceWarp |
| 1 | $1 |
| 1 | TrendMicro Reputation |
| 2110 | TOTAL |