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Use secure certificate for email server

This will entirely depend on your operating system, and mail server.  Some general guidlines are listed here:

  1. Your cert will usually need to be in ‘pem’ fashion.  That is, both key and cert in one file.
  2. Your mail server must support SSL/TLS.

For example, if you have a CPanel server, you can use your cert by editing the following files to contain your cert/key:

  • /etc/exim.key
  • /etc/exim.crt
  • /usr/local/cpanel/etc/cpanel.pem

After your certificate has been installed, you will need to restart CPanel, which should automatically restart Exim.

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