We have an application that sends out mail, but it isn't working right. It's sending local domain mail to the wrong server. I figure it must be getting the MX from local DNS, but how can I check that with nslookup?
I'd install Linux and use "dig" or "host", but I suppose that's asking a bit too much.
I couldn't remember how to use nslookup for that, so I invoked Google, which sent me to Using NSlookup.exe, which enlightened me with this less than ideal wisdom:
But that's not right. It's not wrong, but it assumes the user is trying to find out if a machine IS an MX, which is not what you want to know. For your question, you'd do:
> set q=mx > domain-you-want-to-know-about
For example, if you wanted to know the MX for my domain, you'd type "aplawrence.com".
Leave it to Microsoft to give the least likely usage as their example!
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More Articles by Anthony Lawrence © 2015-04-28 Anthony Lawrence
If you just want to use the system, instead of hacking on its internals, you don't need source code. (Andrew S. Tanenbaum)