Microsoft Exchange Server -- host multiple domains, same USERNAME ?

finance_teacher used Ask the Experts™
What version of Microsoft Exchange Server allows
me to host multiple domains with the same USERNAME ?

1.      One Server
2.      5 domains
3.      John Doe works for company #1 and has
4.      Jane Doe works for company #2 and has
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Lee W, MVPTechnology and Business Process Advisor
Most Valuable Expert 2013

Email domains?  All of them.

Windows Domains? As far as I know, none of them.
Exchange server 2012r2 and Exchange server 2013 both allow the hosting of multiple domains.

Here's a good article on how to get that done.
Ganesh Kumar ALead Technical Consultant
Hosting multiple email domains for single user mailbox is based on the recipient policies, you can have 5 domains with Exchange 2013 and 2010 and 2016.

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