Antispam Features
| Mail Server | DNSBL | SURBL | Spamtraps | Greylisting | SPF | Tarpit | Bayesian filters | Regular expressions | Embedded Antivirus | Embedded Antispam |
|---|---|---|---|---|---|---|---|---|---|---|
| agorum core | No | No | No | No | No | No | No | Yes | No | No |
| Apache James | ? | ? | ? | ? | ? | ? | Yes | ? | ? | ? |
| Atmail | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes ClamAV | Yes SpamAssassin and Exim ACLs |
| Axigen | Yes | Yes | No | Yes | Yes | No | Yes, in SpamAssassin | Yes | Yes Commtouch | Yes SpamAssassin |
| Citadel | Yes | Yes | No | No | Optional (via SpamAssassin) | No | Optional (via SpamAssassin) | No | Optional (ClamAV) | Optional (SpamAssassin) |
| CommuniGate Pro | Yes | Yes | Yes | No | Yes | Yes | Optional | Yes | Optional | Optional |
| Courier Mail Server | Yes | ? | Yes | Yes | Yes | Yes | Yes | Yes | Yes Clamav | Yes |
| Digital Integration iMail5 | Yes | No | No | Yes | No | No | No | Optional (GWAVA) | Optional (GWAVA) | Proprietary, Optional (GWAVA) |
| Dovecot | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Eudora Internet Mail Server | Yes | ? | Yes | Yes | ? | ? | ? | ? | ? | ? |
| Exim | Yes | Yes | Yes | Yes | Yes | Yes | Optional with spamassassin etc. | Yes | Optional any | Optional any |
| FirstClass | Yes | Yes | No | ? | Yes | Yes | Yes | Yes | Yes Symantec | ? |
| Gordano Messaging Suite | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes Commtouch, Authentium | Yes Commtouch |
| GroupWise | Yes | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Hexamail Server | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes BitDefender | Yes |
| hMailServer | Yes | Yes | No | Yes | Yes | No | No | Yes | Yes ClamAV | Yes SpamAssassin |
| IBM Lotus Domino | Yes | ? | ? | ? | No | ? | ? | ? | ? | ? |
| IndiMail | Yes | Yes | No | Yes | Yes | Yes | Yes | Yes | Yes ClamAV | Yes Bogofilter |
| Ipswitch IMail Server | Yes | Yes | No | No | Yes | No | Yes | Yes | Yes Symantec, BitDefender | Yes Commtouch |
| JMail | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes ClamAV and/or optional any | Yes and/or built-in |
| Kolab | Yes | ? | ? | Yes | Yes | ? | Optional with spamassassin etc. | Yes | Optional (via content filter interface) | Optional (via content filter interface) |
| Kerio Connect | Yes | Yes | ? | No | Yes | Yes | Yes | ? | Optional Sophos + optional secondary (dual) | Yes |
| MagicMail | Yes | No | Yes | No | ? | ? | No | Yes | Yes | Yes |
| MailSite Fusion | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes | Yes | Yes |
| Mailtraq | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| MDaemon Mail Server | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Optional Kaspersky Labs | Yes |
| Meldware Mail Server | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Mercury Mail Transport System | Yes | ? | ? | Yes (GreyWall extension) | ? | ? | Yes (SpamHalter extension) | ? | Yes (ClamWall extension) | ? |
| Microsoft Exchange Server | Yes (2003 & later) | ? | ? | Yes | Yes | Yes (2003 & later) | ? | ? | ? | ? |
| Mirapoint | Yes | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes Commtouch, Sophos, F-Secure | Yes Commtouch, Sophos, SPamAssassin |
| NetMail | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Oracle Communications Messaging Server | Yes | Yes | Yes | Yes | Yes | Yes | Optional with spamassassin etc. | Yes | Optional any | Optional any |
| Postfix | Yes | ? | ? | Yes | Yes | ? | Optional with spamassassin etc. | Yes | Optional (via content filter interface) | Optional (via content filter interface) |
| qmail | ? | ? | ? | Yes | ? | ? | No | ? | No | No |
| Sendmail | Yes | Yes (via milter/SA) | ? | Yes | Optional | ? | ? | ? | Yes ClamAV | Yes SpamAssassin |
| SparkEngine | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| SurgeMail | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Synovel Collabsuite | Yes | Yes | Yes | Yes | Yes | ? | Yes | Yes | YesClamAV | Yes SpamAssassin |
| UW IMAP | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| WinGate | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Zarafa | No | No | No | No | No | No | No | No | No | No |
| Zimbra | Yes | ? | ? | ? | ? | ? | ? | ? | Yes ClamAV | Yes SpamAssassin |
| Mail Server | DNSBL | SURBL | Spamtraps | Greylisting | SPF | Tarpit | Bayesian filters | Regular expressions | Embedded Antivirus | Embedded Antispam |
Read more about this topic: Comparison Of Mail Servers
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