MX record in CrossBox Cluster
Does CrossBox Cluster support pointing all MX records to the mail.domainname.com address? So for example MX record > crossbox -> cluster slave?
No, MX always points to the slave but single IMAP/SMTP/POP3 hostname can be used for all slaves.
So if you have domain.com and it is hosted at server1.host.name, you point MX to server1.host.name but you can use mail.my-hosting-company.com as an IMAP/SMPT/POP3 hostname.