We currently have Exchange 2013 on-premises with contoso.com as our accepted smtp domain
Our MX and autodiscover.contoso.com DNS records point to on-premises Exchange 2013
Users with on-premises Exchange 2013 mailbox have UPN contoso.com in on-premises Active Directory
We have mail enabled public folders.
Next to this we have mail users that have no mailbox in our Active Directory, with mail address coworkers.contoso.com and also UPN coworkers.contoso.com
The smtp domain coworkers.contoso.com is not an accepted or relay domain in our on-premises Exchange 2013, Exchange environment does not know this smtp domain
Next to this we have an Office 365 tenant.
The smtp domain coworkers.contoso.com is added to this Office 365 tenant.
We sync the mail users with DirSync to Office 365 and assign an E3 license and thus these mail users have a mailbox in Office 365 and are know as mail user in Exchange 2013 and not remote mailbox.
MX and autodiscover.coworkers.contoso.com DNS records point to Office 365.
Now we want to setup hybrid for contoso.com and also coworkers.contoso.com to the Office 365 tenant
- i will add contoso.com to Office 365 tenant
- i will add coworkers.contoso.com as accepted domain in Exchange 2013
- run the HCW with contoso.com as smtp domain selected for hybrid
- run autodiscover domain feature (autod) and add coworkers.contoso.com as additional smtp domain
- rerun HCW with contoso.com and coworkers.contoso.com smtp domains selected for hybrid
- run the powershell commands on
http://www.msexchange.org/articles-tutorials/office-365/exchange-online/match-office-365-mailbox-new-premises-user-hybrid-deployment.html to make the coworkers.contoso.com mail users known as remote mailboxes in on-premises Exchange 2013
- sync mail enabled public folders to Office 365
Questions
- all mail users that have mail address coworkers.contoso.com are already in the cloud and autodiscover.coworkers.contoso.com points to Office 365, can we leave it like this or should autodiscover.coworkers.contoso.com point to on-premises?
- if we need to switch autodiscover.coworkers.contoso.com to on-premises when do we need to do this?
- activesync devices of coworkers.contoso.com users are now configured via autodiscover.coworkers.contoso.com that points to office 365 if we switch autodiscover.coworkers.contoso.com to on-premises does this have impact and if yes, whats the impact?
- can we first run HCW for contoso.com test and run later HCW with coworkers.contoso.com and leave autodiscover for contoso.com point to on-premises Exchange and coworkers.contoso.com to Office 365?