smtp1.internet.ee has no CNAME records.
Question and response
Question
dig smtp1.internet.ee. NS
Answer
The response has no answer records.
Authority
internet.ee. 1062 SOA c.tld.ee. hostmaster.internet.ee. 2026022506 10800 3600 604800 43200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0