Which DNS configuration is better for a MX record type?
1.- Having a single MX reord type mx.domain.com resolving to a two A record type:
MX 10 mail.domain.com. -> A 188.8.131.52 -> A 184.108.40.206
2.- Having two MX record type mx1.domain.com. and mx2.domain.com. resolving to A record type.
MX 10 mx1.domain.com. -> A 220.127.116.11 MX 20 mx2.domain.com. -> A 18.104.22.168
What would be the real reason for choosing either option 1 or option 2, currently I have option 1 deployed but I think it is better answer option 2 but I do not know the reason why.