RHEL/CentOS: iRedMail SSL Certificates

[Mihai]

This tutorial shows replacing iRedMail's default SSL certificates with Let's Encrypt certificates.
Replacing iRedMail certificates:
A back-up is created for the old certificates (in case the Let`s Encrypt certificate creation operation fails):

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[root @ CentOS ~]$ mv /etc/pki/tls/certs/iRedMail.crt{,.bak}
[root @ CentOS ~]$ mv /etc/pki/tls/private/iRedMail.key{,.bak}
[root @ CentOS ~]$ cp fullchain.pem /etc/pki/tls/certs/iRedMail.crt
[root @ CentOS ~]$ cp privkey.pem /etc/pki/tls/private/iRedMail.key

Let`s Encrypt certificates were created in the /etc/lentsencrypt/live/mail.mydomain.com/ location, a symbolic link is created between the SSL certificates generated by Let`s Encrypt and the location of the iRedMail certificates

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[root @ CentOS ~]$ ln -s /etc/letsencrypt/live/mail.mydomain.com/fullchain.pem /etc/pki/tls/certs/iRedMail.crt
[root @ CentOS ~]$ ln -s /etc/letsencrypt/live/mail.mydomain.com/privkey.pem /etc/pki/tls/private/iRedMail.key