go test fuzz v1
string("v=spf1 A:\xc2\xd5ܰ\xba\x89\xd30\xa1\x9c\xa4\xf7\x92\x84\xa2\xe40\xe50\xf30\x9c\xb3\xde0\xc40\x8d\xf70\x8c\x82\xe40\x80\xff0\xba\x9a߇ߜ0\xdd0\xb4\x8e\xc90\x8e\xe10\x97\xd8\xd40\xa1\x87\xe90\xa2\x9f\xc90\xd70\xedӵ\x82\x8b\x8f0\x98ή0\xd30\xb2\x9a\xcc0\xa8\xd90\xea\u07b50\x93\xabԘ0\xe9\x84\xdc\xdb\xe1\x8b0\xdc\xca0\xf3\xca0\xd0\xdb\xce0\xa5\xc90\xa3\xe10\x9b\xbcŚ\xbb\xaa\xae0\xc40\xfd\x800\xd4\xd5Ú0\xea܇0\xca\xdb\xd30\xc30\xea\xed0\xc5ǽ\x85/ ")