In Plesk, you have the option to install both free and premium SSL/TLS certificates using Let’s Encrypt’s “SSL It!” extension. Additionally, you can install SSL/TLS certificates that you already possess.
Follow these steps to install an SSL certificate with Let’s Encrypt on Plesk:
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Log in to your Plesk account.
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Navigate to Websites and Domains, then select SSL/TLS Certificates.
Note: The status "Domain not secured" will be visible under SSL/TLS Certificates, signifying that the domain lacks SSL protection.
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To start the process, select "Get it free."
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The Let’s Encrypt window for SSL certification will appear. Enter an email address for notifications and lost-key recovery. Choose what to secure in addition to the main domain:
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Wildcard Domain: Matches one or more subdomains.
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"www" subdomain and selected domain aliases.
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Webmail on the main domain.
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IMAP, POP, SMTP mail domains.
Simply select the desired options, then click the "Get it free" button.
Let’s Encrypt will generate and install the SSL/TLS certificate automatically.
Upon visiting SSL/TLS Certificates and inspecting the list of Secured Components, your domain will be marked as secured.