Hi All,
Fairly new to this and never done this before, we have a office with a .com domain which we are coming on board with us and they would like their mail routed through our exchange server as they are moving internet providers as well but still obviously want to keep their domain info etc.
We are running exchange 2013 and any help besides the obvious changing the MX records on their end will be most helpful.
Not sure where to turn regarding getting their mail flowing through our exchange other than changing their MX records etc.
Thanks
Log into Exchange Admin Center >Mail Flow > Accepted domain >Add
Give it a sensible name then type in the new domain name and select 'Authorative' > Save
To Add a mailbox for the new domain
Recipients > Add > User Mailbox > New User.
Edit the User > Email Addresses > Add an email address for the new domain
Untick 'Automatically update email addresses based'
Select the new email address as the reply address.