_6._spf.harvard.edu.    	1200	IN  	TXT	"v=spf1 ip4:51.4.80.0/27 ip4:51.5.72.0/24 ip4:51.5.80.0/27 ip4:52.100.0.0/14 ip4:52.12.139.153/32 ip4:52.13.126.222/32 ip4:52.13.73.26/32 ip4:52.20.14.238/32 ip4:52.20.170.223/32 ip4:52.206.253.208/32 ip4:52.5.11.34/32 ip4:52.7.120.49/32 ip4:52.71.230.209/32 ip4:52.82.172.0/22 ip4:54.185.77.73/32 ip4:54.188.101.235/32 ip4:54.189.43.109/32 ip4:54.202.102.78/32 ip4:54.212.187.12/32 ip4:54.221.241.125/32 ip4:54.221.249.193/32 ip4:54.221.253.131/32 ip4:54.221.253.132/32 ~all"

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