All (Internal and external) Exchange 2010 mail to query MX records for delivery.
Posted on 2011-10-24
I understand that Microsoft Exchange delivers internal mail directly to users' Exchange inboxes without querying the MX records for the domain, whereas it always queries the MX records for messages sent to external recipients.
Besides the exchange 2010 box, I have a Google Apps with Postini for spam filtering plus email backup. I would like all email to be routed through the Google servers not just the ones coming from external recipients. Is this possible? and if so, how?