we are having a problem with a few hosts across our forest that keep dis-joning their repective domains. I was asked to look through the logs and find out why they could be dropping off. my question is which logs am i suppose too look at? and what particular error or indicator am i suppose too look out for? i'm not looking for an outright answer to why the hosts are dropping off, i'm just looking to be pointed in the right direction as to where i should start looking.