Hello,
I read already a lot of threads basically saying the same and almost explaining the same issues as here.
I got the following setup:
domain1.xy
domain2.xy
domain3.xy
Hostname is plesk.domain1.xy
The Mail Server is protected by the plesk.domain1.xy at least the certificate says so.
But...
Hey,
I got the same problem after I tried to migrate my stuff over to a new plesk server.
I got domain1.xy for the hostname and mail server and domain2.yx and domain3.yx for the website and mail.
Prior to the migration I've got the same setup, but something doesn't work.
I didnt find the SNI...