Review: MailScanner and ScrolloutF1 are standouts in open source email security

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Email security is of paramount concern in any organization. A significant percentage of malware is delivered via email, on the premise that an unsuspecting user will open the message, allowing the malware payload onto the user’s machine. From there, malware can worm its way into the network and wreak various kinds of havoc, often undetected, sometimes for months or even years.

It should then come as no surprise that a significant industry has grown up around the serious business of containing email threats. We decided to review four open source products to see if they could deliver enterprise-grade security. The four products were CipherMail, MailScanner Scrollout F1 and hMailServer.

Each product takes a unique approach to email security. CipherMail has the narrowest focus as it performs only one main task, email encryption, with a small dose of data loss prevention (DLP). It acts as a gateway that uses four different encryption standards to encrypt/decrypt both incoming and outgoing mail.

At the other end of the spectrum is hMailServer, a fully-featured email server that supports all common email protocols and contains built-in support for virus and spam protection. In between, there is Scrollout F1 and MailScanner.

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