I have virtualised exchange 2010 with one nic facing outwards (3) to firewall and one facing inwards to users. Exchange is reporting errors with DNS "MSExchange ADAccess 2501"
If i ping the host name from a user machine, I get the external IP address. If I ping the internal IP address I get a suitable response.
Users are having intermittent conection problems with Outlook connecting to exchange and staying connected.