Greylisting
Greylisting helps stop spam even before it enters your network
Virus scanning
Scan for viruses/malware with industry standard ClamAV antivirus
Malware analysis of attachments
Detect viruses ,worms, Trojans & trapdoors
SURBL scanning
Scan for URLs with phishing or malware using SURBL
Blacklisting
Blacklisting & Whitelisting to bypass greylisting delays
Sender scoring
Mail server reputation based filtering
Mailbot
Configure common actions in lieu of web interface
Quarantine
Dangerous and suspicious mails stopped and filed away
Temporary queuing
Mails are queued if Standard edition internal MTA is down