For some unknown reasons I am having unexpected restart of ALL DC. At first I thought it was a power failure - but its happening ONLY on the DC. In the error log the only major errors I see are:
DCOM was unable to communicate with the computer exchangeiii.domain.us using any of the configured protocols.DCOM was unable to communicate with the computer exchangeiii.resdevelopment.us using any of the configured protocols.
exchangeiii is the only exchange which I previously upgraded and had to do a clean up in order to remove.