So lets get started - MX Record

HOSTPRIORIP
alt4.aspmx.l.google.com50209.85.225.26(iy-in-f26.1e100.net)
alt3.aspmx.l.google.com40173.194.77.26(ob-in-f26.1e100.net)
alt2.aspmx.l.google.com3074.125.127.26(pz-in-f26.1e100.net)
alt1.aspmx.l.google.com20173.194.71.26(lb-in-f26.1e100.net)
aspmx.l.google.com10173.194.70.26(fa-in-f26.1e100.net)

MX RECORD - What is it?

A mail exchanger record (MX record) is a type of resource record in the Domain Name System that specifies a mail server responsible for accepting email messages on behalf of a recipient's domain and a preference value used to prioritize mail delivery if multiple mail servers are available. The set of MX records of a domain name specifies how email should be routed with the Simple Mail Transfer Protocol