I have setup a new mail server which will eventually replace a current mailserver. Now, without changing the MX records to point to the new server, I will be unable to test this mailserver. Is their a way that I can still test that the mailserver is working? I've created a new domain alias (such as test.domain.com) and that is working fine- just wandering if there is any way through some DNS tricks that can trick an email program into sending the email to a different host (such as my new host) than the current email server?
There are 3 different methods I can think of to achieve the desired result. (see note at end)
Caveat - I haven't tried having both a production and test Exchange box serving the same email domain and on the same windows domain as a test Exchange box - I have a feeling they may not get on together but I'm not certain.