mail.webtasy.com has no CNAME records.
Question and response
Question
dig mail.webtasy.com. NS
Answer
The response has no answer records.
Authority
webtasy.com. 77 SOA ns1.freedns.si. info.webtasy.com. 2026030501 1200 7200 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0