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 Home » MailScan
 MailScan 6.x
 
  
 

Powerful AntiSpam and AntiPhishing

Real-time Black List (RBL)
RBL is a DNS Server that lists IP Addresses of known Spam sending machines. If the contacting IP is found to be in one of the blacklisted categories, the connection is terminated.

SURBL Check
Unlike normal RBLs, SURBL Check works by scanning for the presence of names or URLs of Spam websites in the message body.

General Header Tests
MailScan checks the validity of all the headers in the mail and if any of the headers are found to be invalid, the mail will be considered as Spam.

MX/A DNS Record Verification
The domain part of the email address in the "MAIL FROM" SMTP command is checked to see if it has a DNS MX (Mail Server) and/or A (IP) record as it is typical of spammers to use non-existent domains in their emails.

Reverse DNS
A reverse DNS check is performed to see if the connecting IP resolves to a valid domain name before accepting or rejecting the email.

X-Spam Rules Check
X-Spam Rules are Rules that describe certain characteristics of a mail and they are matched against the mail header, body and attachment to generate a score for each mail. If the score crosses a threshold value, then the mail is considered a Spam.

Sender Policy Framework (SPF)
Sender Policy Framework is a world standard that helps to prevent forgery of sender address and is a powerful mechanism to stop Phishing mails.

Auto Updates for Spam Detection
The system updates the Bayesian Spam Database with probable phrases and words.

Power to Block Image Spam
To evade 'word' and 'Phrases' based Spam Control and Content Scanning software solutions, many spammers today are increasingly resorting to the use of images in their mails. The text written inside an image is not scanned by most security solutions and hence not caught by Spam blockers. MailScan uses powerful technologies to filter out image spam.

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

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