Question and response
Question
dig a.hichina.mail.aliyun.com. TXT
Answer
a.hichina.mail.aliyun.com. 3600 TXT "v=spf1 ip4:42.120.70.0/23 ip4:42.120.133.0/20 ip4:42.156.128.0/21 ip4:59.82.0.0/24 ip4:59.82.1.0/24 ip4:47.90.198.0/24 -all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0