==   SMTP gateway ==
    * fully compatible with any SMTP mail server
    * routes mail on a per-domain basis
    * per recipient/host whitelists and blacklists
    * SMTP and LDAP/Active Directory callout for e-mail address validation
    * temporary storage with retries in case of final server failure
    * outgoing load balancing and/or failover


== Anti-Spam ==

    * [[http://www.spamassassin.org|SpamAssassin]] base ruleset and additional rules
    * Bayesian controls, with auto-learn
    * RBL checks
    * Checksum protocols such as [[http://razor.sourceforge.net|Razor]], [[http://www.rhyolite.com/anti-spam/dcc/|DCC]], [[http://pyzor.sourceforge.net|Pyzor]]
    * URL RBLs
    * [[http://www.openspf.org/|SPF]] checks


== Anti-Virus/Dangerous Content ==
    * [[http://www.clamav.net|ClamAV]] scanning engine with automatic updates
    * File type and file name access lists
    * detection of potentially dangerous content


== Adinistration Web GUI ==
    * complete configuration of filtered domains, with forwarding and preferences (languages, templates, user authentication, ...)
    * configuration of the base system (network, proxies, ...)
    * access to all users' configurations and quarantine
    * full real-time spam quarantine access
    * full real-time blocked content access (virus and dangerous content)
    * Anti-Spam/Anti-virus/Content protection policy configuration
    * advanced administration access list, so you can delegate light administrative access to other people, such as a hotline for example
    * monitoring of the whole MailCleaner filter farm
    * access to all logs
    * mail queue access and control


== User Web GUI ==
    * Authenticator connectors so your users won't have to remember another credential
      * IMAP/POP3 connector (to authenticate against a POP3 or IMAP server)
      * LDAP / Active Directory (to authenticate against an external LDAP, Exchange/Active Directory or Lotus server)
      * Radius
      * MySQL
      * Local (users' credentials are stored on the MailCleaner server)
      * Tequila ([[http://sourceforge.net/projects/tequila-auth/|Tequila]])
    * Full access to their quarantine, with message release and analysis options
    * per e-mail address configuration options, such as delivery mode (tag, quarantine, drop) and periodic summaries.


== Installer ==
    * support for almost any x86 compatible hardware
    * automatic software RAID generation

and much more...