Multi domain internal routing Accepted Domains
Posted on 2012-09-16
(example domain names, acme.com and beta.com)
I have an Exchange 2007 single server that has two domain names associated with it. We own both and MX DNS etc all working.
DNS internal is acme.com, with no reference to beta.com
100 mailboxes - acme.com authorised domain - mail works fine in and out - to person, disty group,
10 users (going into their acme.com mailbox) - beta.com authorised domain.
The 10 users are have @acme.com email address (reply) and beta.com email addresses.
So as an example:
Mike - firstname.lastname@example.org, Mike@beta.com
Finn Finn@acme.com, Finn@beta.com
When I email a Mike or Finn directly @beta.com they receive the email. Same as their acme.com addresses. (works as expected)
I created a distribution group, configure it with the email alias of email@example.com and add Mike and Finn to the group to now get a 518.104.22.168 relay error.
Im not sure what I need to do. I have tried to google this but its quite hard to explain via the search engine. I have also tried an email specialist site msexchange.org, to no avail.
Hope it makes sense.
Any advice would be helpful.