I have a multisite WordPress setup where each site has its own domain using WPMU DEV’s Domain Mapping plugin. The main site in the network (domainA.com) is setup in Plesk (12.5) as a full website. Each of the sub-sites (domainB.com, domainC.com, domainD.com, etc) are setup as aliases.
I have installed the Let’s Encrypt extension and can create a certificate for domainA.com, however this doesn’t support alias domains. I have also tried Certbot but I think Plesk is causing issues as it complains about vhosts when trying to install the certificates.
Have I missed something or is my setup not currently supported?
Please let me know if you need any additional information. I’d appreciate any advice.