Duxbury Networking, in association with its principal, Clearswift, has launched a new e-mail content security solution.
MIMEsweeper for SMTP (Simple Mail Transfer Protocol) 5.0, scans e-mail messages as they enter and leave the network and checks to ensure they match the organisation`s e-mail policy.
It also blocks viruses, spam, suspicious file types, oversized files and ensures that files containing sensitive information are not leaked out via e-mail.
"A key feature of MIMEsweeper for SMTP 5.0 is its ability to enable companies to implement e-mail content security policies on a corporate-wide basis," says Jaco Serfontein, Duxbury`s Clearswift product manager.
He says the product has been designed to provide greater scalability, improved management and improved threat detection capabilities.
"This, the fifth iteration of Clearswift`s SMTP software, is a product designed to meet the demands of customers of all sizes," he says. "It has been specifically developed to improve the user experience of the network administrator and it shows a clear leap forward from previous versions."
Serfontein says Mimesweeper helps to guard against potential security incidents that could seriously disrupt the flow of business, causing companies to lose time and money.
"Additionally, an organisation`s reputation, share value and brand image is at stake should confidential information or intellectual property be lost - particularly to competitors.
"Moreover, companies in possession of offensive or illegal material - even unwittingly - are at risk of not meeting their corporate social responsibility targets, as well as falling foul of industry regulations and legal obligations," he adds.
MIMEsweeper for SMTP 5.0 takes an organisation`s messages and determines whom the message has come from, where it is going to, how it is constructed and what it contains. The engine then applies appropriate policy rules depending on the sender/recipient combination.
To understand the construction and content of the message, MIMEsweeper takes the message apart using a process called "recursive decomposition".
This process enables the MIMEsweeper engine to deal with situations where a file is nested inside another file - for example, an image can be embedded into a word document, and that document may be zipped before being sent.
Once a message has been disassembled, and the policy needed to validate the message has been identified, the engine performs the message checks - such as looking for viruses and spam, keywords and phrases - and decides what to do with the message.
Options include "deliver", "delete" or "quarantine" and inform the appropriate staff accordingly.
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