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

SpamAssassin base ruleset and additional rules

Bayesian controls, with auto-learn

RBL checks

Checksum protocols such as Razor, DCC, Pyzor

URL RBLs

SPF checks

ClamAV scanning engine with automatic updates

File type and file name access lists

detection of potentially dangerous content

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

Authenticator connectors so your users won’t have to remember another credential

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.