[0] 0.48.15.103.in-addr.arpa.: domain name does not exist
[0] 1.48.15.103.in-addr.arpa.: domain name does not exist
[3600] 2.48.15.103.in-addr.arpa. domain name pointer sv48d2.emailserver.vn
[3600] 3.48.15.103.in-addr.arpa. domain name pointer sv48d3.emailserver.vn
[3600] 4.48.15.103.in-addr.arpa. domain name pointer sv48d4.emailserver.vn
[3600] 5.48.15.103.in-addr.arpa. domain name pointer sv48d5.emailserver.vn
[3600] 6.48.15.103.in-addr.arpa. domain name pointer sv48d6.emailserver.vn
[3600] 7.48.15.103.in-addr.arpa. domain name pointer sv48d7.emailserver.vn
[3600] 8.48.15.103.in-addr.arpa. domain name pointer sv48d8.emailserver.vn
[3600] 9.48.15.103.in-addr.arpa. domain name pointer sv48d9.emailserver.vn
[3600] 10.48.15.103.in-addr.arpa. domain name pointer sv48d10.emailserver.vn
[3600] 11.48.15.103.in-addr.arpa. domain name pointer host01.emailserver.vn
[3600] 12.48.15.103.in-addr.arpa. domain name pointer host02.emailserver.vn
[3600] 13.48.15.103.in-addr.arpa. domain name pointer host03.emailserver.vn
[3600] 14.48.15.103.in-addr.arpa. domain name pointer host04.emailserver.vn
[3600] 15.48.15.103.in-addr.arpa. domain name pointer host05.emailserver.vn
[3600] 16.48.15.103.in-addr.arpa. domain name pointer host06.emailserver.vn
[3600] 17.48.15.103.in-addr.arpa. domain name pointer host07.emailserver.vn
[3600] 18.48.15.103.in-addr.arpa. domain name pointer sv48d18.emailserver.vn
[3600] 19.48.15.103.in-addr.arpa. domain name pointer sv48d19.emailserver.vn
[3600] 20.48.15.103.in-addr.arpa. domain name pointer host08.emailserver.vn
[3600] 21.48.15.103.in-addr.arpa. domain name pointer sv48d21.emailserver.vn
[3600] 22.48.15.103.in-addr.arpa. domain name pointer sv48d22.emailserver.vn
[3600] 23.48.15.103.in-addr.arpa. domain name pointer sv48d23.emailserver.vn
[3600] 24.48.15.103.in-addr.arpa. domain name pointer sv48d24.emailserver.vn
[3600] 25.48.15.103.in-addr.arpa. domain name pointer pro36.emailserver.vn
[3600] 26.48.15.103.in-addr.arpa. domain name pointer sv48d26.emailserver.vn
[3600] 27.48.15.103.in-addr.arpa. domain name pointer sv48d27.emailserver.vn
[3600] 28.48.15.103.in-addr.arpa. domain name pointer sv48d28.emailserver.vn
[3600] 29.48.15.103.in-addr.arpa. domain name pointer pro41.emailserver.vn
[3600] 30.48.15.103.in-addr.arpa. domain name pointer sv48d30.emailserver.vn
[3600] 31.48.15.103.in-addr.arpa. domain name pointer sv48d31.emailserver.vn
[3600] 32.48.15.103.in-addr.arpa. domain name pointer sv48d32.emailserver.vn
[3600] 33.48.15.103.in-addr.arpa. domain name pointer sv48d33.emailserver.vn
[3600] 34.48.15.103.in-addr.arpa. domain name pointer sv48d34.emailserver.vn
[3600] 35.48.15.103.in-addr.arpa. domain name pointer sv48d35.emailserver.vn
[3600] 36.48.15.103.in-addr.arpa. domain name pointer sv48d36.emailserver.vn
[3600] 37.48.15.103.in-addr.arpa. domain name pointer sv48d37.emailserver.vn
[3600] 38.48.15.103.in-addr.arpa. domain name pointer sv48d38.emailserver.vn
[3600] 39.48.15.103.in-addr.arpa. domain name pointer sv48d39.emailserver.vn
[3600] 40.48.15.103.in-addr.arpa. domain name pointer sv48d40.emailserver.vn
[3600] 41.48.15.103.in-addr.arpa. domain name pointer sv48d41.emailserver.vn
[0] 42.48.15.103.in-addr.arpa.: domain name does not exist
[0] 43.48.15.103.in-addr.arpa.: domain name does not exist
[3600] 44.48.15.103.in-addr.arpa. domain name pointer mail2.matbao.com
[3600] 45.48.15.103.in-addr.arpa. domain name pointer sv48d45.emailserver.vn
[0] 46.48.15.103.in-addr.arpa.: domain name does not exist
[0] 47.48.15.103.in-addr.arpa.: domain name does not exist
[3600] 48.48.15.103.in-addr.arpa. domain name pointer mail.matbao.com
[3600] 49.48.15.103.in-addr.arpa. domain name pointer sv48d49.emailserver.vn
[3600] 50.48.15.103.in-addr.arpa. domain name pointer sv48d50.emailserver.vn
[3600] 51.48.15.103.in-addr.arpa. domain name pointer sv48d51.emailserver.vn
[3600] 52.48.15.103.in-addr.arpa. domain name pointer sv48d52.emailserver.vn
[3600] 53.48.15.103.in-addr.arpa. domain name pointer sv48d53.emailserver.vn
[3600] 54.48.15.103.in-addr.arpa. domain name pointer sv48d54.emailserver.vn
[3600] 55.48.15.103.in-addr.arpa. domain name pointer sv48d55.emailserver.vn
[3600] 56.48.15.103.in-addr.arpa. domain name pointer sv48d56.emailserver.vn
[3600] 57.48.15.103.in-addr.arpa. domain name pointer sv48d57.emailserver.vn
[3600] 58.48.15.103.in-addr.arpa. domain name pointer sv48d58.emailserver.vn
[3600] 59.48.15.103.in-addr.arpa. domain name pointer sv48d59.emailserver.vn
[3600] 60.48.15.103.in-addr.arpa. domain name pointer sv48d60.emailserver.vn
[3600] 61.48.15.103.in-addr.arpa. domain name pointer sv48d61.emailserver.vn
[3600] 62.48.15.103.in-addr.arpa. domain name pointer pro40.emailserver.vn
[3600] 63.48.15.103.in-addr.arpa. domain name pointer sv48d63.emailserver.vn
[3600] 64.48.15.103.in-addr.arpa. domain name pointer sv48d64.emailserver.vn
[3600] 65.48.15.103.in-addr.arpa. domain name pointer sv48d65.emailserver.vn
[3600] 66.48.15.103.in-addr.arpa. domain name pointer sv48d66.emailserver.vn
[3600] 67.48.15.103.in-addr.arpa. domain name pointer sv48d67.emailserver.vn
[3600] 68.48.15.103.in-addr.arpa. domain name pointer sv48d68.emailserver.vn
[3600] 69.48.15.103.in-addr.arpa. domain name pointer pro42.emailserver.vn
[3600] 70.48.15.103.in-addr.arpa. domain name pointer sv48d70.emailserver.vn
[3600] 71.48.15.103.in-addr.arpa. domain name pointer sv48d71.emailserver.vn
[3600] 72.48.15.103.in-addr.arpa. domain name pointer sv48d72.emailserver.vn
[3600] 73.48.15.103.in-addr.arpa. domain name pointer sv48d73.emailserver.vn
[3600] 74.48.15.103.in-addr.arpa. domain name pointer sv48d74.emailserver.vn
[3600] 75.48.15.103.in-addr.arpa. domain name pointer sv48d75.emailserver.vn
[3600] 76.48.15.103.in-addr.arpa. domain name pointer sv48d76.emailserver.vn
[3600] 77.48.15.103.in-addr.arpa. domain name pointer sv48d77.emailserver.vn
[3600] 78.48.15.103.in-addr.arpa. domain name pointer sv48d78.emailserver.vn
[3600] 79.48.15.103.in-addr.arpa. domain name pointer sv48d79.emailserver.vn
[3600] 80.48.15.103.in-addr.arpa. domain name pointer sv48d80.emailserver.vn
[3600] 81.48.15.103.in-addr.arpa. domain name pointer pro33.emailserver.vn
[3600] 82.48.15.103.in-addr.arpa. domain name pointer sv48d82.emailserver.vn
[3600] 83.48.15.103.in-addr.arpa. domain name pointer pro32.emailserver.vn
[3600] 84.48.15.103.in-addr.arpa. domain name pointer sv48d84.emailserver.vn
[3600] 85.48.15.103.in-addr.arpa. domain name pointer sv48d85.emailserver.vn
[3600] 86.48.15.103.in-addr.arpa. domain name pointer sv48d86.emailserver.vn
[3600] 87.48.15.103.in-addr.arpa. domain name pointer pro29.emailserver.vn
[3600] 88.48.15.103.in-addr.arpa. domain name pointer sv48d88.emailserver.vn
[3600] 89.48.15.103.in-addr.arpa. domain name pointer pro34.emailserver.vn
[3600] 90.48.15.103.in-addr.arpa. domain name pointer sv48d90.emailserver.vn
[3600] 91.48.15.103.in-addr.arpa. domain name pointer sv48d91.emailserver.vn
[3600] 92.48.15.103.in-addr.arpa. domain name pointer sv48d92.emailserver.vn
[3600] 93.48.15.103.in-addr.arpa. domain name pointer sv48d93.emailserver.vn
[3600] 94.48.15.103.in-addr.arpa. domain name pointer pro49.emailserver.vn
[3600] 95.48.15.103.in-addr.arpa. domain name pointer pro38.emailserver.vn
[3600] 96.48.15.103.in-addr.arpa. domain name pointer sv48d96.emailserver.vn
[3600] 97.48.15.103.in-addr.arpa. domain name pointer pro39.emailserver.vn
[3600] 98.48.15.103.in-addr.arpa. domain name pointer sv48d98.emailserver.vn
[3600] 99.48.15.103.in-addr.arpa. domain name pointer sv48d99.emailserver.vn
[0] 100.48.15.103.in-addr.arpa.: domain name does not exist
[3600] 101.48.15.103.in-addr.arpa. domain name pointer pro35.emailserver.vn
[3600] 102.48.15.103.in-addr.arpa. domain name pointer sv48d102.emailserver.vn
[3600] 103.48.15.103.in-addr.arpa. domain name pointer sv48d103.emailserver.vn
[3600] 104.48.15.103.in-addr.arpa. domain name pointer sv48d104.emailserver.vn
[3600] 105.48.15.103.in-addr.arpa. domain name pointer sv48d105.emailserver.vn
[3600] 106.48.15.103.in-addr.arpa. domain name pointer sv48d106.emailserver.vn
[3600] 107.48.15.103.in-addr.arpa. domain name pointer sv48d107.emailserver.vn
[3600] 108.48.15.103.in-addr.arpa. domain name pointer sv48d108.emailserver.vn
[3600] 109.48.15.103.in-addr.arpa. domain name pointer sv48d109.emailserver.vn
[3600] 110.48.15.103.in-addr.arpa. domain name pointer pro45.emailserver.vn
[3600] 111.48.15.103.in-addr.arpa. domain name pointer sv48d111.emailserver.vn
[3600] 112.48.15.103.in-addr.arpa. domain name pointer pro43.emailserver.vn
[3600] 113.48.15.103.in-addr.arpa. domain name pointer sv48d113.emailserver.vn
[3600] 114.48.15.103.in-addr.arpa. domain name pointer pro46.emailserver.vn
[3600] 115.48.15.103.in-addr.arpa. domain name pointer sv48d115.emailserver.vn
[3600] 116.48.15.103.in-addr.arpa. domain name pointer sv48d116.emailserver.vn
[3600] 117.48.15.103.in-addr.arpa. domain name pointer sv48d117.emailserver.vn
[3600] 118.48.15.103.in-addr.arpa. domain name pointer sv48d118.emailserver.vn
[3600] 119.48.15.103.in-addr.arpa. domain name pointer sv48d119.emailserver.vn
[3600] 120.48.15.103.in-addr.arpa. domain name pointer pro47.emailserver.vn
[3600] 121.48.15.103.in-addr.arpa. domain name pointer pro37.emailserver.vn
[3600] 122.48.15.103.in-addr.arpa. domain name pointer sv48d122.emailserver.vn
[3600] 123.48.15.103.in-addr.arpa. domain name pointer sv48d123.emailserver.vn
[3600] 124.48.15.103.in-addr.arpa. domain name pointer sv48d124.emailserver.vn
[3600] 125.48.15.103.in-addr.arpa. domain name pointer sv48d125.emailserver.vn
[3600] 126.48.15.103.in-addr.arpa. domain name pointer sv48d126.emailserver.vn
[3600] 127.48.15.103.in-addr.arpa. domain name pointer sv48d127.emailserver.vn
[3600] 128.48.15.103.in-addr.arpa. domain name pointer sv48d128.emailserver.vn
[3600] 129.48.15.103.in-addr.arpa. domain name pointer sv48d129.emailserver.vn
[3600] 130.48.15.103.in-addr.arpa. domain name pointer sv48d130.emailserver.vn
[3600] 131.48.15.103.in-addr.arpa. domain name pointer sv48d131.emailserver.vn
[3600] 132.48.15.103.in-addr.arpa. domain name pointer sv48d132.emailserver.vn
[3600] 133.48.15.103.in-addr.arpa. domain name pointer sv48d133.emailserver.vn
[3600] 134.48.15.103.in-addr.arpa. domain name pointer sv48d134.emailserver.vn
[3600] 135.48.15.103.in-addr.arpa. domain name pointer sv48d135.emailserver.vn
[3600] 136.48.15.103.in-addr.arpa. domain name pointer sv48d136.emailserver.vn
[3600] 137.48.15.103.in-addr.arpa. domain name pointer sv48d137.emailserver.vn
[3600] 138.48.15.103.in-addr.arpa. domain name pointer sv48d138.emailserver.vn
[3600] 139.48.15.103.in-addr.arpa. domain name pointer sv48d139.emailserver.vn
[3600] 140.48.15.103.in-addr.arpa. domain name pointer sv48d140.emailserver.vn
[3600] 141.48.15.103.in-addr.arpa. domain name pointer pro31.emailserver.vn
[3600] 142.48.15.103.in-addr.arpa. domain name pointer pro44.emailserver.vn
[3600] 143.48.15.103.in-addr.arpa. domain name pointer sv48d143.emailserver.vn
[3600] 144.48.15.103.in-addr.arpa. domain name pointer sv48d144.emailserver.vn
[3600] 145.48.15.103.in-addr.arpa. domain name pointer sv48d145.emailserver.vn
[3600] 146.48.15.103.in-addr.arpa. domain name pointer sv48d146.emailserver.vn
[3600] 147.48.15.103.in-addr.arpa. domain name pointer sv48d147.emailserver.vn
[3600] 148.48.15.103.in-addr.arpa. domain name pointer sv48d148.emailserver.vn
[3600] 149.48.15.103.in-addr.arpa. domain name pointer sv48d149.emailserver.vn
[3600] 150.48.15.103.in-addr.arpa. domain name pointer sv48d150.emailserver.vn
[3600] 151.48.15.103.in-addr.arpa. domain name pointer sv48d151.emailserver.vn
[3600] 152.48.15.103.in-addr.arpa. domain name pointer sv48d152.emailserver.vn
[3600] 153.48.15.103.in-addr.arpa. domain name pointer sv48d153.emailserver.vn
[3600] 154.48.15.103.in-addr.arpa. domain name pointer sv48d154.emailserver.vn
[3600] 155.48.15.103.in-addr.arpa. domain name pointer sv48d155.emailserver.vn
[3600] 156.48.15.103.in-addr.arpa. domain name pointer sv48d156.emailserver.vn
[3600] 157.48.15.103.in-addr.arpa. domain name pointer sv48d157.emailserver.vn
[3600] 158.48.15.103.in-addr.arpa. domain name pointer sv48d158.emailserver.vn
[3600] 159.48.15.103.in-addr.arpa. domain name pointer sv48d159.emailserver.vn
[3600] 160.48.15.103.in-addr.arpa. domain name pointer sv48d160.emailserver.vn
[3600] 161.48.15.103.in-addr.arpa. domain name pointer sv48d161.emailserver.vn
[3600] 162.48.15.103.in-addr.arpa. domain name pointer sv48d162.emailserver.vn
[3600] 163.48.15.103.in-addr.arpa. domain name pointer sv48d163.emailserver.vn
[3600] 164.48.15.103.in-addr.arpa. domain name pointer sv48d164.emailserver.vn
[3600] 165.48.15.103.in-addr.arpa. domain name pointer sv48d165.emailserver.vn
[3600] 166.48.15.103.in-addr.arpa. domain name pointer sv48d166.emailserver.vn
[3600] 167.48.15.103.in-addr.arpa. domain name pointer sv48d167.emailserver.vn
[3600] 168.48.15.103.in-addr.arpa. domain name pointer sv48d168.emailserver.vn
[3600] 169.48.15.103.in-addr.arpa. domain name pointer sv48d169.emailserver.vn
[3600] 170.48.15.103.in-addr.arpa. domain name pointer sv48d170.emailserver.vn
[3600] 171.48.15.103.in-addr.arpa. domain name pointer pro30.emailserver.vn
[3600] 172.48.15.103.in-addr.arpa. domain name pointer sv48d172.emailserver.vn
[3600] 173.48.15.103.in-addr.arpa. domain name pointer sv48d173.emailserver.vn
[3600] 174.48.15.103.in-addr.arpa. domain name pointer sv48d174.emailserver.vn
[3600] 175.48.15.103.in-addr.arpa. domain name pointer sv48d175.emailserver.vn
[3600] 176.48.15.103.in-addr.arpa. domain name pointer sv48d176.emailserver.vn
[3600] 177.48.15.103.in-addr.arpa. domain name pointer sv48d177.emailserver.vn
[3600] 178.48.15.103.in-addr.arpa. domain name pointer sv48d178.emailserver.vn
[3600] 179.48.15.103.in-addr.arpa. domain name pointer sv48d179.emailserver.vn
[3600] 180.48.15.103.in-addr.arpa. domain name pointer sv48d180.emailserver.vn
[3600] 181.48.15.103.in-addr.arpa. domain name pointer sv48d181.emailserver.vn
[3600] 182.48.15.103.in-addr.arpa. domain name pointer sv48d182.emailserver.vn
[3600] 183.48.15.103.in-addr.arpa. domain name pointer sv48d183.emailserver.vn
[3600] 184.48.15.103.in-addr.arpa. domain name pointer sv48d184.emailserver.vn
[3600] 185.48.15.103.in-addr.arpa. domain name pointer sv48d185.emailserver.vn
[3600] 186.48.15.103.in-addr.arpa. domain name pointer sv48d186.emailserver.vn
[3600] 187.48.15.103.in-addr.arpa. domain name pointer sv48d187.emailserver.vn
[3600] 188.48.15.103.in-addr.arpa. domain name pointer sv48d188.emailserver.vn
[3600] 189.48.15.103.in-addr.arpa. domain name pointer sv48d189.emailserver.vn
[3600] 190.48.15.103.in-addr.arpa. domain name pointer sv48d190.emailserver.vn
[3600] 191.48.15.103.in-addr.arpa. domain name pointer sv48d191.emailserver.vn
[3600] 192.48.15.103.in-addr.arpa. domain name pointer sv48d192.emailserver.vn
[3600] 193.48.15.103.in-addr.arpa. domain name pointer sv48d193.emailserver.vn
[3600] 194.48.15.103.in-addr.arpa. domain name pointer sv48d194.emailserver.vn
[3600] 195.48.15.103.in-addr.arpa. domain name pointer sv48d195.emailserver.vn
[3600] 196.48.15.103.in-addr.arpa. domain name pointer sv48d196.emailserver.vn
[3600] 197.48.15.103.in-addr.arpa. domain name pointer sv48d197.emailserver.vn
[3600] 198.48.15.103.in-addr.arpa. domain name pointer sv48d198.emailserver.vn
[3600] 199.48.15.103.in-addr.arpa. domain name pointer sv48d199.emailserver.vn
[3600] 200.48.15.103.in-addr.arpa. domain name pointer sv48d200.emailserver.vn
[3600] 201.48.15.103.in-addr.arpa. domain name pointer sv48d201.emailserver.vn
[3600] 202.48.15.103.in-addr.arpa. domain name pointer sv48d202.emailserver.vn
[3600] 203.48.15.103.in-addr.arpa. domain name pointer sv48d203.emailserver.vn
[3600] 204.48.15.103.in-addr.arpa. domain name pointer sv48d204.emailserver.vn
[3600] 205.48.15.103.in-addr.arpa. domain name pointer sv48d205.emailserver.vn
[3600] 206.48.15.103.in-addr.arpa. domain name pointer sv48d206.emailserver.vn
[3600] 207.48.15.103.in-addr.arpa. domain name pointer sv48d207.emailserver.vn
[3600] 208.48.15.103.in-addr.arpa. domain name pointer sv48d208.emailserver.vn
[3600] 209.48.15.103.in-addr.arpa. domain name pointer sv48d209.emailserver.vn
[3600] 210.48.15.103.in-addr.arpa. domain name pointer sv48d210.emailserver.vn
[3600] 211.48.15.103.in-addr.arpa. domain name pointer sv48d211.emailserver.vn
[3600] 212.48.15.103.in-addr.arpa. domain name pointer sv48d212.emailserver.vn
[3600] 213.48.15.103.in-addr.arpa. domain name pointer sv48d213.emailserver.vn
[3600] 214.48.15.103.in-addr.arpa. domain name pointer sv48d214.emailserver.vn
[3600] 215.48.15.103.in-addr.arpa. domain name pointer sv48d215.emailserver.vn
[3600] 216.48.15.103.in-addr.arpa. domain name pointer sv48d216.emailserver.vn
[3600] 217.48.15.103.in-addr.arpa. domain name pointer sv48d217.emailserver.vn
[3600] 218.48.15.103.in-addr.arpa. domain name pointer sv48d218.emailserver.vn
[3600] 219.48.15.103.in-addr.arpa. domain name pointer sv48d219.emailserver.vn
[3600] 220.48.15.103.in-addr.arpa. domain name pointer sv48d220.emailserver.vn
[3600] 221.48.15.103.in-addr.arpa. domain name pointer pro01.emailserver.vn
[3600] 222.48.15.103.in-addr.arpa. domain name pointer pro02.emailserver.vn
[3600] 223.48.15.103.in-addr.arpa. domain name pointer pro03.emailserver.vn
[3600] 224.48.15.103.in-addr.arpa. domain name pointer pro04.emailserver.vn
[3600] 225.48.15.103.in-addr.arpa. domain name pointer pro05.emailserver.vn
[3600] 226.48.15.103.in-addr.arpa. domain name pointer pro06.emailserver.vn
[3600] 227.48.15.103.in-addr.arpa. domain name pointer pro07.emailserver.vn
[3600] 228.48.15.103.in-addr.arpa. domain name pointer pro08.emailserver.vn
[3600] 229.48.15.103.in-addr.arpa. domain name pointer pro09.emailserver.vn
[3600] 230.48.15.103.in-addr.arpa. domain name pointer pro10.emailserver.vn
[3600] 231.48.15.103.in-addr.arpa. domain name pointer pro11.emailserver.vn
[3600] 232.48.15.103.in-addr.arpa. domain name pointer pro12.emailserver.vn
[3600] 233.48.15.103.in-addr.arpa. domain name pointer pro13.emailserver.vn
[3600] 234.48.15.103.in-addr.arpa. domain name pointer pro14.emailserver.vn
[3600] 235.48.15.103.in-addr.arpa. domain name pointer pro15.emailserver.vn
[3600] 236.48.15.103.in-addr.arpa. domain name pointer pro16.emailserver.vn
[3600] 237.48.15.103.in-addr.arpa. domain name pointer pro17.emailserver.vn
[3600] 238.48.15.103.in-addr.arpa. domain name pointer pro18.emailserver.vn
[3600] 239.48.15.103.in-addr.arpa. domain name pointer pro19.emailserver.vn
[3600] 240.48.15.103.in-addr.arpa. domain name pointer pro20.emailserver.vn
[3600] 241.48.15.103.in-addr.arpa. domain name pointer pro21.emailserver.vn
[3600] 242.48.15.103.in-addr.arpa. domain name pointer pro22.emailserver.vn
[3600] 243.48.15.103.in-addr.arpa. domain name pointer pro23.emailserver.vn
[3600] 244.48.15.103.in-addr.arpa. domain name pointer pro24.emailserver.vn
[3600] 245.48.15.103.in-addr.arpa. domain name pointer pro25.emailserver.vn
[3600] 246.48.15.103.in-addr.arpa. domain name pointer pro26.emailserver.vn
[3600] 247.48.15.103.in-addr.arpa. domain name pointer pro27.emailserver.vn
[3600] 248.48.15.103.in-addr.arpa. domain name pointer pro28.emailserver.vn
[3600] 249.48.15.103.in-addr.arpa. domain name pointer sv48d249.emailserver.vn
[3600] 250.48.15.103.in-addr.arpa. domain name pointer relay1.emailserver.vn
[3600] 251.48.15.103.in-addr.arpa. domain name pointer sv48d251.emailserver.vn
[3600] 252.48.15.103.in-addr.arpa. domain name pointer sv48d252.emailserver.vn
[0] 253.48.15.103.in-addr.arpa.: domain name does not exist
[0] 254.48.15.103.in-addr.arpa.: domain name does not exist
[0] 255.48.15.103.in-addr.arpa.: domain name does not exist