I followed a setup guide: https://www.tecmint.com/setup-postfix-mail-server-in-ubuntu-debian/
I am able to send emails to almost all email addresses without issue. However, when I try to send an email to the email address (mydomain@domain.com) no email is being received.
In the logs I dont see anything that mentions receiving the email record, only see when the email has gone out from the server.