Hi,

I'm migrating a domain in an organization to another new domain. Now, we are migrating the workstations to the new domain. Users are not migrated, they are completely new in the new domain.

So, the problem is that we have a workstation in the new domain and the user from new domain logged on on this machine. The user has successfully configured is old exchange account in Outlook (Exchange server is still in the old domain) and can receive email, but cannot send. 

Can someone help please to find what is wrong?

Hello

What is the error message when send email?
Send email from OWA work?