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I would like to know if it is possible and maybe recommendable to use only one (Letsencrypt) certiticate for encrypting traffic to a mailserver and to a website.

I have a domain example.com and issued Letsencrypt certbot successfully to fetch a certificate for the website at example.com.

My mail server is called mail.example.com.

Can I use the same certificate in my mailserver configuration files for postfix and dovecot?

kzpm
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1 Answers1

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Yes, you can add more than one host name to a LE cert. It's not a problem. You just have to make sure that all affected systems get the new cert and are properly restarted/reloaded when it's renewal time.

Sven
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