First just so that I am clear what is a subdomain and does ISPConfig offer support for this to my customers. IF so are there any limits to it. Thanks
If you have the domain mydomain.com, then www.mydomain.com is a subdomain of mydomqin.com and shop.mydomain.com will be another subdomain of mydomain.com. ISPConfig offers subdomains. In ISPConfig they are part of the Co-Domains. Simply add a Co-Domain, enter as host e.g. shop and as domain the smae domain that the website has.
Thanks for that... its what I thought it was which is good. Is there any limits to subdomains on ISPConfig
No, there are no limits implemented except the domain limits you can set for each client and reseller.