spf.tipimail.com has no MX records.
Question and response
Question
dig spf.tipimail.com. MX
Answer
The response has no answer records.
Authority
tipimail.com. 3600 SOA ns1.sarbacane-dns.com. abuse.sarbacane.com. 2026021901 21600 3600 86400 172800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0