We are migrating mail from one of our domains to the exchange (123123.com). We created users in AD, created mailboxes for them and copied mail from Google there. Also the domain was added to accepted.
Now other users of other domains from the exchange are trying to write a letter to the addresses of the domain that we are migrating. The exchange puts the received letter to itself, but I need it to be forwarded to Google servers.
How to make the exchange send a letter for the domain further to Google, but not save it?
I tried to make a Send connector for the domain, I tried to change the UPN and SMTP for users, I tried to disable mailboxes - it was unsuccessful.