Author: Yeri Tiete

First of all, create your certificates (the regular way). I created one with multiple domains: webmail.rootspirit.com, mail.rootspirit.com, smtp.rootspirit.com. In my case, as the mailserver and webserver are behind a proxy (postfix, imap, Roundcube Webmail), I create the certificate on the proxy (nginx) and scp the cert to the mail server. All this is automated with…