[0] 0.20.124.115.in-addr.arpa.: domain name does not exist
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[1800] 232.20.124.115.in-addr.arpa. domain name pointer out20-232.mail.aliyun.com
[1800] 233.20.124.115.in-addr.arpa. domain name pointer out20-233.mail.aliyun.com
[1800] 234.20.124.115.in-addr.arpa. domain name pointer out20-234.mail.aliyun.com
[1800] 235.20.124.115.in-addr.arpa. domain name pointer out20-235.mail.aliyun.com
[1800] 236.20.124.115.in-addr.arpa. domain name pointer out20-236.mail.aliyun.com
[1800] 237.20.124.115.in-addr.arpa. domain name pointer out20-237.mail.aliyun.com
[1800] 238.20.124.115.in-addr.arpa. domain name pointer out20-238.mail.aliyun.com
[1800] 239.20.124.115.in-addr.arpa. domain name pointer out20-239.mail.aliyun.com
[1800] 240.20.124.115.in-addr.arpa. domain name pointer out20-240.mail.aliyun.com
[1800] 241.20.124.115.in-addr.arpa. domain name pointer out20-241.mail.aliyun.com
[1800] 242.20.124.115.in-addr.arpa. domain name pointer out20-242.mail.aliyun.com
[1800] 243.20.124.115.in-addr.arpa. domain name pointer out20-243.mail.aliyun.com
[1800] 244.20.124.115.in-addr.arpa. domain name pointer out20-244.mail.aliyun.com
[1800] 245.20.124.115.in-addr.arpa. domain name pointer out20-245.mail.aliyun.com
[1800] 246.20.124.115.in-addr.arpa. domain name pointer out20-246.mail.aliyun.com
[1800] 247.20.124.115.in-addr.arpa. domain name pointer out20-247.mail.aliyun.com
[1800] 248.20.124.115.in-addr.arpa. domain name pointer out20-248.mail.aliyun.com
[1800] 249.20.124.115.in-addr.arpa. domain name pointer out20-249.mail.aliyun.com
[1800] 250.20.124.115.in-addr.arpa. domain name pointer out20-250.mail.aliyun.com
[1800] 251.20.124.115.in-addr.arpa. domain name pointer out20-251.mail.aliyun.com
[1800] 252.20.124.115.in-addr.arpa. domain name pointer out20-252.mail.aliyun.com
[1800] 253.20.124.115.in-addr.arpa. domain name pointer out20-253.mail.aliyun.com
[1800] 254.20.124.115.in-addr.arpa. domain name pointer out20-254.mail.aliyun.com
[0] 255.20.124.115.in-addr.arpa.: domain name does not exist