DNS settings

Question 1

MX record?

Answer 1

Mail Exchanger, used for outgoing (SMTP) and incoming (POP3/IMAP)

Question 2

A record?

Answer 2

associates a domain name with an IPv4 address

Question 3

AAAA record?

Answer 3

associates your domain name with an IPv6 address

Question 4

CNAME record?

Answer 4

Canonical Name, DNS record that maps an alias name to a true domain name

Question 5

Pointer (PTR) record?

Answer 5

(DNS) record that resolves an IP address to a domain or host name