I remember this discussion years ago with older versions of SBS, but I'll post it here for the most timely opinions.
A business has SBS 2011 with exchange 2010. They have their mail email@example.com and the local domain is a.local.
We want to be able to host the mail for b.com also, another domain we bought / have full access to DNS, etc.
There's only 2 accounts that would use that b.com domain. A mailbox for user firstname.lastname@example.org and a forwarder email@example.com that would forward to firstname.lastname@example.org and email@example.com
Any issues with doing this? Is it complicated? Any links to a clear step by step process?