Forum Discussion
JeremyTBradshaw
Aug 18, 2020Steel Contributor
<Tenant>.onmicrosoft.com added to on-premises Accepted Domains
Hello all, I'm working with a customer who has had their Hybrid Configuration in place for years and they do not remember is this happened automatically via the HCW, or if they manually added it....
JeremyTBradshaw
Steel Contributor
HidMov Thanks very much for the info.
PeterRising
Aug 19, 2020MVP
Hi, I can also confirm that in older hybrid deployments using Exchange 2010 I have seen both the .onmicrosoft.com and mail.onmicrosoft.com domains added as accepted domains on premises.
On more recent hybrids using Exchange 2016, only the mail.onmicrosoft.com domain is present.
- JeremyTBradshawAug 19, 2020Steel ContributorThanks for the info as well. Based on this, and the earlier response, as well as the environment I noticed it in, seems like it was the way previously, either with Exchange 2010, or just earlier HCW versions.
In retrospect, it seems I've been on quite a stretch of Exchange 2013 and newer projects, which I guess is a good thing, but clearly I've lost touch with 2010, at least a little bit.