mail1.presscloud.com has no NS records.
NS records for this zone are defined at presscloud.com.
NS records for this zone are defined at presscloud.com.
Question and response
Question
dig mail1.presscloud.com. NS
Answer
The response has no answer records.
Authority
presscloud.com. 1800 SOA carl.ns.cloudflare.com. dns.cloudflare.com. 2396796662 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0