Hi.. Im probably doing something very dumb but am having a problem receiving mail in my exchange. I have set up MX records for autodiscover.domain.dom and remote.domain.dom with a records for both. i have run the internet and email wizard and tried to repair the system, but I just keep getting mail undeliverable its been a while since i played with SBS 2003.. spoilt by SBS 2K8! anyway, I have the error 5.1.2 bad destination host DNS Hard error looking up remote.clarusprojects.co.uk but if I ping it, it comes back with my ip address.. must be the exchange server not recognizing the email address at domain name (firstname.lastname@example.org) . any help gratefully accepted.