It will be for all my customers. I just checked and my host supports wildcard domains. Posterous is doing the same thing. They are using an IP address to map

It will be for all my customers. I just checked and my host supports wildcard domains. Posterous is doing the same thing. They are using an IP address to map the DNS though. I wonder if you can use a domain (e.g. ns1.mysite.com) in case the IP address changes. http://posterous.com/help/custom_domain http://posterous.com/help/custom_domain