I do not remember if I ever experienced something like this, and I want to ask you if it is normal.
So there was a domain name of mine lets say car_123.com. Now I added the bicycle_123.com as a domain alias, and set up bicycle_123.com's nameservers to be the same as car_123.com.
Now, why car_123.com is down too?
Edit: I think it is an Apache server (if that's available on Solaris?) but not sure, I do not own it. I just really wanted to know the single fact that can adding a domain alias cause the original domain to disfunction?