TLS and SSL for IMAP and SMTP

Hi,
I have bought ssl certificae and applied that for https. But want to use it for ssl and tls. Can you please tell me the easy way to implement it?
Thanks in advance.

See here:
Using your own SSL certificates

I have 3 files total
ca_bundle.crt, certificate.crt and private.key. How to add them? your documentation didn’t mention anything called ca_bundle.crt. Please suggest.

and what about TLS ?

Please see the documentation of your SSL certificate provider regarding usage with Postfix, Dovecot and Apache.

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