X-Spam is highly adaptive Anti-Spam Software that protects the SMTP and Exchange Servers from Spam. X-Spam uses advanced regular expressions and meta tests to positively identify Spam and block it. X-Spam is maintenance free software and once installed will practically run itself and keep itself updated. X-Spam uses Heuristics Scoring to prevent legitimate mail from being tagged as Spam. An intuitive interface is provided to further customize the filters, scoring and other Spam fighting options.

X-Spam works at the mail protocol level and provides two levels of security for your email infrastructure. Before accepting mail at the mail protocol layer the connecting mail server is checked against a Spam sending black list and if found the mail is not accepted from this server; after mail has been accepted, it goes through a series of special filters that add to the total Spam score of the mail. A Spam threshold is assigned. If the mail crosses the threshold then it is tagged as Spam.

        Key Features:

• Web Based Administration:
  Administration Console can be accessed using a browser, thus enabling Remote Administration of the application.

• Attachment Filtering:
  Extensive options to block certain attachments like EXE, COM, CHM or BAT from being sent or received.

• Real-Time Content Scanning:
  All incoming and outgoing messages are scanned in Real-Time for offensive words and Adult Content, with the help of Security Policies.

• Advanced AntiSpam and AntiPhising:
  Using a combination of technologies like Real-time Black List, SURBL Checking, MX/A DNS Record Verification, Reverse DNS, X-Spam Rules Check, Sender Policy Framework and Non Intrusive Learning Patterns spam and phishing emails are blocked.
  

• Non Intrusive Learning Patters (NILP):
  This unique technology from MicroWorld is an advanced Spam Filtering method with the intelligence to analyze all mails to filter and block spam, according to the Behavioral Patterns of the user.

• Blocking Image Scan:
  User powerful in-built technologies to filter out image spam.

• LDAP Authentication:
  Supports LDAP Authenticated Web Administration.Supports LDAP Authenticated Web Administration.
  

• Comprehensive Attachment and Email Archiving:
  Customizable options to archive e-mails and attachments flowing in and out of the system. This feature also helps in comprehensive Content Auditing.

• SMTP Transparent Proxy:
  SMTP Transparent Proxy enables a Transport Layer Security based communication between Hub Transport Server and Edge Transport Server.

• Autogenerated Spam Whitelist:
  When a local user sends a mail to an email address, the system automatically adds that ID to the Spam Whitelist.

• Greylisting:
  In Greylisting, mails coming from unknown senders are rejected temporarily as most spamming servers do not try to send the mail in case of a first time rejection.

• Clustering:
  Clustering provides load balancing by distributing mails to multiple computers for scanning.
  

• Relay Control:
  Stops spammers from using your organization's IP addresses to send Spam.

• Compression and Decompression:
  Options for automatic compression and decompression of files.
  

• TCP Connections:
  This option shows all TCP/UDP connections in the system, like Processes, Protocol, Local Address, Remote Address, and Status.
  

• POP3 Authentication:
  This helps in authenticating users and restricting unauthorized access to quarantined mails.
  

• Customized Disclaimers:
  Easy to use options to add Customized Disclaimers all external and internal emails.
  

• LDAP and POP3 Authentication:
  Supports LDAP & POP3 Authenticated Web Administration.
  

• SMTP Authentication:
  The sender can be authenticated at the SMTP level.