I’m trying to get a second mailserver running on a UCS domain but I have trouble delivering email from one mailserver to the other.
Both mailservers run on ucs-slaves connected through different openvpn servers to the ucs-master/backup. So both slaves are joined to the domain and can talk to the master but there is no (internal) route from one slave to the other.
Postfix will read
ldap.transport and detect the right ‘mail home server’ but cannot connect to
10.x.y.1 as there is no route to it.
I can think of two directions for solving this issue:
- creating the necessary routes for the slaves
- or telling postfix to not use
mail.domain.tdlas destination for the domain user.
I would prefer the No2 solution but cannot figure out a (postfix-/ucs-)way to do this.