Mailtraq secure email server software
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Spamihilator » SSL/TLS
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Consider renaming TLS options in settings - Feature request - eM Client
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Networking 101: Transport Layer Security (TLS) - High Performance Browser Networking (O'Reilly)
SSL/TLS and SMTP - Setting a secure SMTP with an encryption protocol
SSL Scanner for SSL/TLS security vulnerabilities - Pentest-Tools.com
