"How do I generate a CSR certificate for CA, to use with my
postfix mail server? How do I install and configure postfix mail
server SSL certificate under Red Hat enterprise Linux 5 or CentOS 5
"Procedure for creating a CSR on postfix MTA is just like web
server. You need to use OpenSSL which is a cryptography toolkit
implementing the Secure Sockets Layer (SSL v2/v3) and Transport
Layer Security (TLS v1) network protocols and related cryptography
standards under Linux / UNIX. To configure postfix SSL SMTP you
need 3 files
(a) The private key generated using step #1
(b) Your .crt certificate file (it will be send by CA)
(c) CA certificate..."
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