Microsoft Exchange Troubleshooting

Job ID: 34666171

Budget: $30 – $250 USD

Hi,
I've got an Exchange server 2019 setup
Installation is done and OWA is working
Mails from Outlook work fine for one user.
Mails to the intranet domain and external domains are not working.

The requirement is to do the troubleshooting the above issue and make it fully functional.
Connector configurations to be done.
Mails should work from outlook clients to and from external domains
Some mailboxes will be on-premises and some will be in the Azure cloud.