Hi, I just wanted to share an experience of mine while using Plesk. Apparently Plesk is for more advanced users, and there isn't an option for adding Wildcard subdomains. If you ever need to set up wildcard I think this can be helpful.
In some situations, you may want to have domain.com as well as *.domain.com point to the same site in Plesk. Plesk will automatically set up hosting for domain.com and
www.domain.com within the Apache configuration, but you can direct all subdomains for a particular domain to a certain virtual host fairly easily.
DNS
Add a CNAME or A record for *.domain.com which points to domain.com (for a CNAME), or the domain’s IP (for an A record.
Apache Configuration
Edit the /var/www/vhosts/domain.com/conf/vhost.conf or /home/httpd/vhosts/domain.com/conf/vhost.conf file and enter this information:
ServerAlias *.domain.com
If the vhost.conf didn’t exist before, you will need to run:
# /usr/local/psa/admin/bin/websrvmng -a -v
Whether the vhost.conf was new or not, you will need to reload the Apache configuration:
# /etc/init.d/httpd reload
or
# apachectl graceful
Please use this thread to discuss Plesk in particular, post anything that you think comes helpful to know about the panel.