The most important USPs offered by MailScan are that:

• Robust Anti Spam features that allow you to create a White List of clean domains and users.
• Online RBL and DUL Controls that allow you to verify a users authenticity.
• Create a Black List of known Spamming domains and users to auto block their mails
• Set Filters to check for Spam phrases and words. Apply a Spam severity level to control how Spam is identified
• Auto download Anti Virus Signatures
• Block any attachment type
• Create and send custom alerts when virus or Spam is detected in mails, to the mail sender, receiver and admin
• Quarantine Spam and virus infected mails to a directory or mailbox
• Start Anti-Virus/Spam and mail service directly from the application without quitting or reboot.
  

Figure 1. White Lists and Spam Phrases (click on the image for bigger view)

MAPS (Mail Abuse Prevention System) provides a list of IP addresses that are known Spammers or allow spamming. This list is called as Black hole list. When your server, receives a mail from a domain, not on its allow domain list, you can send a query to MAPS Server which verifies the IP.

Spammers sometimes use stealth mail tactics when their initial Spam attempts are blocked. They use a Dial-Up-Service (DUL) provider to connect their Spam mail service, to the server. This is trespassing on your MailServer and the MAPS DUL project helps in identifying and stopping Spam. The project has a list of DUL users who are known Spammers. To verify if the request for connection to your Server is genuine, you can send a query to dialups.mail-abuse.org. The request is verified and returned.

Figure 2 shows a screen from MailScan for Linux (CommuniGate Pro), the top selling Anti-Virus and Spam software for Linux mail servers with features of RBL and DUL.

Figure 2 RBL and DUL features (click on the image for bigger view)

Anti Virus Features
MailScan for Linux (CommuniGate Pro) Linux has robust anti virus features as explained below.

VIRUS DEFINITION UPDATES
Every day sees new viruses appearing. Updates are vaccines that detect and remove new viruses. The software must have the means to identify new viruses and remove them. Updates are available as free down loads on our mirror download. MailScan for Linux (CommuniGate Pro) can be configured to connect automatically and download updates from updates download sites.

You can also set a daily schedule to automatically download updates at a set time.

Figure 3 shows a screen with from MailScan for Linux (CommuniGate Pro), the top selling Anti Virus and Anti Spam software, with features to automatically download updates.

Figure 3 Download Updates (click on the image for bigger view)

BLOCK SPECIFIC ATTACHMENT TYPES
Some types of attachments are used as virus carrier files. MailScan for Linux (CommuniGate Pro) allows you to specify such attachment types and these are automatically blocked. This feature can also be used to stop confidential data being mailed as attachments.

Another feature is a white list of users and domains to which mails can be sent without scanning. This feature removes double scanning and increases mail delivery speed.

Figure 4 shows a screen with from MailScan for Linux (CommuniGate Pro), the top selling Anti Virus and Anti Spam software, with features to automatically download updates.

Figure 4 Block Specific Attachment Types (click on the image for bigger view)

SEND CUSTOM ALERTS
MailScan for Linux (CommuniGate Pro) allows you to send customized alerts to the Spam (Virus) administrator and the mail sender and recipient. You can choose to quarantine infected mails.

Figure 5 shows a screen with from MailScan for Linux (CommuniGate Pro), the top selling Anti Virus and Anti Spam software, with features to send alerts.

Figure 5 Send Customized Alerts (click on the image for bigger view)