X500 addresses – where is the beef?

x500aliens

Here is a great site that explains why x500 is needed and when it is used in on-prem and hybrid scenarios:

https://eightwone.com/2013/08/12/legacyexchangedn-attribute-myth/

Also, here is a little bit related subject about how to marry together a local AD account and already created o365 mailbox:

http://techgenix.com/match-office-365-mailbox-new-premises-user-hybrid-deployment/

Good article about history of x500:

https://www.experts-exchange.com/articles/9650/NDRs-and-the-legacyExchangeDN.html

And some good article about x400 history:

http://techgenix.com/x400-addresses-exchange-2010-part1/