spf.domenomania.pl has no MX records.
Question and response
Question
dig spf.domenomania.pl. MX
Answer
The response has no answer records.
Authority
domenomania.pl. 600 SOA ns1.domenomania.pl. bok.domenomania.pl. 2026030502 3600 1800 604800 600
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0