Something
public text v1 · immutable router = lookuphost, transport = remote_smtp
host gmail-smtp-in.l.google.com [72.14.247.27] MX=5
host alt1.gmail-smtp-in.l.google.com [72.14.205.27] MX=10
host alt2.gmail-smtp-in.l.google.com [64.233.183.27] MX=10
host alt2.gmail-smtp-in.l.google.com [64.233.183.114] MX=10
host gsmtp163.google.com [64.233.163.27] MX=50