Exchange 2013 uses a type of SSL certificate that is known as a “Subject Alternate Name” (SAN) certificate.
In some cases this will be called a “Unified Communications” (UC) certificate by providers such as Digicert.
Exchange Server 2013 provides secure client-server and server-server network communications by using SSL certificates to secure protocols such as HTTP, SMTP, POP and IMAP.
Because of the “secure by default” requirements, when an Exchange 2013 server is installed it is configured with self-signed SSL certificates that are enabled for those protocols.
If there is even one unsecure link on the page, the SSL will appear as broken.The format can can vary among the different browsers.Below are a few examples of different sites with different browsers.Once purchased (I’m assuming you also purchased from Name Cheap) log into your Neam Cheap control panel and click on “Issue” next to your newly purchased SSL cert.To finish up we’ll want to make sure that any HTTP request the Synology receives is redirected to HTTPS and thus ensuring each time you access your Synology DSM it’s being protected by the SSL certificate.