This means that the domain administrator can read those emails
Not even that.
Unless Mali has explicitly set up bogus domains paralleling US ones to try to exploit this – which would be pretty visible – normally what’s going to happen is a DNS query for MX on a domain to determine the mail server to which the email should go. That will fail, and the mail sending attempt will fail on US servers.
Not even that.
Unless Mali has explicitly set up bogus domains paralleling US ones to try to exploit this – which would be pretty visible – normally what’s going to happen is a DNS query for MX on a domain to determine the mail server to which the email should go. That will fail, and the mail sending attempt will fail on US servers.