Array
(
    [gmail-smtp-in.l.google.com] => 5
    [alt1.gmail-smtp-in.l.google.com] => 10
    [alt2.gmail-smtp-in.l.google.com] => 20
    [alt3.gmail-smtp-in.l.google.com] => 30
    [alt4.gmail-smtp-in.l.google.com] => 40
    [gmail.com] => 0
)