DNS lookup fails when forwarding to subdomain
- by Kitaro
In order to migrate to a new mailserver with little dns problems/downtime, I have set up a second postfix that is currently accessible on a subdomain mx record, eg. the main postfix accepts mail for user@example.com while the second postfix also accepts mail for user@mx2.example.com.
I added a forwarding rule to postfix saying that postfix should…