This is a question about MX procotol priority. If I have two server as MX with different priority:
- MX 10 serverA
- MX 20 serverB
Is this guarantee by the protocol that the MX 10 is the prefered? Can the submitter choose the secondary for any other reason but primary availability?
In other words: if my serverA MX is well working and with (theoretical) infinite connection capacity, can I be sure that nobody will try a connection to serverB?