How can I set up a domain alias in Plesk?
For a specific domain you are going to set and alias, you will need to create vhost.conf and vhost_ssl.conf in home /httpd/vhosts/domain.com/conf/. Both of the .conf files should have the following in them:
ServerAlias alias1.domain.com
After that is completed, you will need to rebuild the Apache configuration thusly:
/usr/local/psa/admin/sbin/websrvmng –reconfigure-vhost –vhost-name=