Vote for IronMail

IronMail is a security appliance that sits between the network firewall and Exchange, to protect against buffer overrun and denial-of-service attacks, virus (using the Sophos anti-virus product), and spam. Monitors for other suspicious activities that might indicate an intrusion. Provides some e-mail policies for incoming and outgoing messages. Uses a hardware accelerator for SSL encryption, without the need to encrypt on every mail server.

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