Recently install domain mapping plugin, apparently works, I setup following the install instructions putting domain-mapping.php on /wp-content/mu-plugins, then on sunrise.php uncomment the
define( 'SUNRISE', 'on' );. Setting up the server IP address, I get in to admin of subdomain.domain.com/blog1 and setup the domain mapping writing the otherdomain.com who had to works with the blog1, the otherdomain.com is on other server and there I make the domain a DNS A record pointed to subdomain.domain.com IP. Until this, everything works fine, but then when I try to go to otherdomain.com I see the ispCP Omega login page instead the subdomain.domain.com/blog1. The MU installation for subdomain.domain.com/blog1 is on a Virtual Server and ispCP software not cPanel.
Any idea of how to fix this?