I have a bunch of domains that I am looking to map together using WordPress MU. I have gone through the installation process for MU and can see a "my sites" and admin tab. Currently, when I try to go to "Domain Mapping: Domains" and add any of my other domains, nothing happens. No warming, nothing. I've set up my names servers to be the same as my main MU website and I'm pretty sure I correctly set up the A Name. I'm using netfirms and (Host: MYDomain.com is pointing to the correct IP. And A is pointing to the correct IP. mx is not, should it be?)
Although it may be related, if I put the domain_mapping.php file in mu-plugins, the entire website goes "white" and I have to remove or rename the file in my ftp to have any access to my website.
Any help would be appreciated!