SymptomsWhen I open a domain via http://WWW.DOMAIN.TLD, the default page of Parallels Plesk Panel is shown. I do not see options in Parallels Plesk Panel to enable the WWW prefix on the domain.
How do I make my domain work with a WWW prefix?
Additional informationA domain works with WWW prefixes if an entry ServerAlias exists in the Apache configuration file of the domain. Here is an example of a valid Apache configuration of the domain DOMAIN.TLD with an enabled WWW prefix:
If the record ServerAlias "www.DOMAIN.TLD" is missing, the WWW prefix does not work for the domain.
ResolutionStarting from version 10.0.0, the "www" prefix is managed automatically by Parallels Plesk Panel. It evaluates the presence of the CNAME record www.DOMAIN.TLD in the DNS zone of the domain and adds the ServerAlias "www.<DOMAIN.TLD>" record to the webserver configuration.
Starting from version 10.3.1, the ServerAlias "www.<DOMAIN.TLD>" record is added to the webserver configuration for each domain without depending on its DNS zone content. It is recommended that you update your installation to version 10.3.1 if you have difficulties in enabling the "www" prefix for a domain.