Add let's encrypt for webmail.alias
Currently, it is impossible to secure the webmail for the alias.
Please allow the possibility to issue Let's Encrypt SSL for the wbmail of the domain alias.
Steve Y commented
Slightly different issue...we have the scenario where we host email and someone else hosts the web site. We cannot create a webmail.example.com cert because the example.com cert can't validate.
+1 and urgent! :)