- Plesk Onyx for Windows
After applying SSL certificate for securing webmail under
example.com domain URL
http://webmail.example.com is inaccessible (shows Plesk Default Page).
HTTP binding is replaced by
HTTPS binding in IIS > Sites >MailEnable Webmail > Bindings. This is Plesk bug with ID #PPPM-6184 which is planned to be fixed in future Plesk updates.
As a workaround, go to Internet Information Services (IIS) Manager > Sites > MailEnable WebMail > Bindings and add a corresponding binding record with the proper host name on 80 port.