Is it possable to have two tennants send from one domain name? (merger)
On prem I know you could update your SPF for the other side, send out as chosen domain name and on the receiving side create contacts and a send connector to get the emails to go across. In 365 I know you cant create a reply address for another domain name that is already in use by 365. I guess this would also be the same issue with free busy using the MFG. Regards, Paul.
