Zend certified PHP/Magento developer

Multiple domains with unique DNS servers in resolv.conf

I have the following resolv.conf for example1.com domain.

search example1.com
nameserver x.x.x.1
nameserver x.x.x.2

Now, I want to extend my resolv.conf to include example2.com as well. How do I write my resolv.conf?

After reading resolv.conf manaual page I came up with this:

search example1.com example2.com
nameserver x.x.x.1
nameserver x.x.x.2
nameserver x.x.x.3 # for example2.com
nameserver x.x.x.4 # for example2.com

I know that example2.com will be looked-up in the first two nameservers first and will timeout but when it reaches the third nameserver it should just work, shouldn’t it?

Can someone shed some light on this please?