Simple solutions for IT Managers/Administrators in the Small and Medium Business market to help you get the most of your Microsoft IT investment. We will do this by tackling a couple topics each week.
Unfortunately, even with the NDR codes to help and detailed SMTP logging turned on, there are a number of situations where it is still not obvious if the problem lies within your mail system or the destination domain's mail servers. That's where it helps to be able to be the mail server itself.
No matter how much we try, there will inevitably be messages that the system gives up on and are unable to be delivered. Luckily Microsoft Exchange, as our postman, does a pretty good job of giving us the clues as to why the message was not delivered.
