We are currently looking at changes to the recipient filtering on our email gateway to simply drop incoming emails from the internet that are going to an invalid recipient. it's a new gateway, and we thought it was configured to drop invalid recipient messages. Researching that issue led me to a question I thought would be simple, but haven't found any documentation.
In looking at the Remote Domain settings in Exchange 2010, under Organization Config, Hub Transport, Remote Domains, Default, I see the checkbox to uncheck, or select, to allow NDRs to external domains. So, silly me, when I right clicked to view the Properties under the Accepted Domains, I expected to see similar setting choices about delivery reports, non-delivery reports, out of office notificiations etc that could be selected and disabled (I don't know why someone would, but...), but there are none.
I don't see a need disable such things for internal mail in an Exchange organization, but I was getting some questions from a manager who was worried that if we adjust any settings to Remote Domains,, like disable NDRs, that INTERNAL senders would not receive an NDR if they manually type in an INTERNAL recipient address that is misspelled. I assured him the Remote Domains doesn't affect internal NDRs already, but in looking at all these settings I started assuming NDRs, delivery reports, Out of Office notices appear to all be on by default and also are not manageable internally - but I can't find any documentation that clearly states such.
And so my question: "Would there ever be a need where one would even want to adjust internal NDRs, DR, and Office notifications on an internal mail organization, and if so, is there somewhere in Exchange 2010 that one would do such?" I don't see a need, but my Exchange experience is limited.
As stated I don't see a reason or a need myself. I'm also not finding any docs that state something like "NDRs or Office notifications are always "on" for internal mail exchanges.