First you should learn how to create a self-signed certificate using OpenSSL (free). After that it is a simple matter of copying the files to appropriate location and enabling dovecot to use SSL authentication. Let's look at the details.

I wish you all a Happy Diwali and Kalipuja and many many happy returns of the same. Everywhere is filled with sounds of firecrackers. It feels smoky even inside the house. Note: Diwali is the festival of lights, commemorating the ultimate triumph of good over evil, of light over darkness.

OpenSSL is a free, popular, robust, high quality, open source (Apache License) toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library. It is available on multiple platforms (Linux, BSD & Windows). In short it means that you can use OpenSSL to easily create certificate signing request (csr file) for your server to request certificate from certification authority like Verisign, Thawte etc. You can also use OpenSSL to create self-signed certificate to use on your Apache web server, Dovecot and other SSL enabled services. Let's look at how we can easily create a CSR using SSL and also how we can create a self-signed certificate using OpenSSL.

Often you will find strange questions being asked in an interview. They can either be inappropriate or simply unexpected. Some examples of oddball questions are: "What is your perception of the painting in the lobby?" "What would you do with a million dollars?" "Can you tell a joke?" (samples from career news)