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Mail messages can be encrypted in two ways; the content of the email message can be encrypted, or the connection used to send the email message can be encrypted. MXtreme supports both methods.
Message encryption - encrypting a mail message's contents can often be problematic to mail servers. With the message encrypted, mail scanners, such as the MXtreme, are unable to read the contents. To perform scanning, such as anti-virus or content filtering, on the message the MXtreme must receive the message in clear text. To get around this problem, MXtreme can integrate with PGP's Universal server, which is a 3rd party encryption product.
Connection encryption - the MXtreme supports the use of TLS/SSL (Transport Level Security/Secure Socket Layer) to encrypt the email traffic between the MXtreme and other email devices. This includes connections to remote systems, local internal MS Exchange systems, or even internal mail clients. You can establish email VPNs with remote offices and business partners with the minimum of impact. MXtreme allows for TLS to be optional or to be enforced based on the receiving or sending server.
This type of connection is similar to that used for Web browsers when performing secure services, such as on-line banking. MXtreme also provides the ability to create policies so that particular email addresses or domains, such as branch offices or business partners, always require TLS when sending or receiving mail messages.
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