Handle MX priority and server fields separately
Handle MX priority and server fields separately

Since the zone file gem I'm using only does string pasting, not data
validation, it worked before when treating the string "10 mail.domain" as the
server. To be more future-proof, split the string into priority and server
fields.

notCalle/palletjack,saab-simc-admin/palletjack,notCalle/palletjack,creideiki/palletjack,saab-simc-admin/palletjack,creideiki/palletjack