I have a question about how mail mirroring works. It says that all the emails on one domain will work on the other domain. But i'm not clear on how this works- what about mailboxes set up on the domain which is being mirrored- does the mirroring domain also have a mailbox created, or does it just work like an alias?
I would test this out but the domain I want to use "mail mirroring" on is currently pointing to a different, non-Dreamhost webhost. I want to set things up before I switch the nameservers to point to Dreamhost.