Certificate

Security Certificate

To configure a SSL certificate for TLS and/or SSL over SMTP:

1. Abstract: Create Certificate
   • Generate key
   • Generate signing request
   • Sign the key
   • Create server certificate
   • Set permission
   • Set owner
   • Copy into place
   • Restart services

1. 1. Self-Signed Certificate
      1. openssl genrsa -out x.key 2048
      2. openssl req -new -key x.key -out x.csr
      3. openssl x509 -req -days 3650 -in x.csr -signkey x.key -out x.crt
      4. cat x.crt x.key > servercert.pem
      5. chmod 644 servercert.pem
      6. chown root:qmail servercert.pem
      7. cp -p servercert.pem /var/qmail/control