I'm about to configure a dns server in order to get rid of amazon mail sending limits. As private ip's are dynamic, how can i associate host+FQDN with a private ip and make sure the association is always valid although ip's get changed in a lapsus of time. Should the dns server get notificated every time the ip gets changed? And how? Thanks in advanced!
PD: I think using elastic IPs is not a valid solution as AMIs comunicate each other through dynamic private IPs.