Question and response
Question
dig spf.de.alibabacloud.com. PTR
Answer
The response has no answer records.
Authority
alibabacloud.com. 1200 SOA ns3.aliyun.com. hostmaster.alibabadns.com. 2018062819 3600 1200 3600 360
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0