I’ve configured several domains in the admin panel, But one of this domains is configured to use mail-in-a-box for dns administration and handle the email accounts from G Suite (I’ve override MX with google MX reg. ).
But when I’m going to send an email from one of my mail-in-a-box hosted accounts to one of this G Suite emails, I’m getting " Recipient address rejected: User unknown in virtual mailbox table" error.
My hosted account is an alias managed from gmail.
firstname.lastname@example.org (configured as an alias in mail-in-a-box)
email@example.com (Configured in G suite using googles MX in mail-in-a-box)
I need help.