a_spf.westcon.com has no MX records.
Question and response
Question
dig a_spf.westcon.com. MX
Answer
The response has no answer records.
Authority
westcon.com. 1800 SOA ns3.westcon.com. dnsadmin.westcon.com. 2026071612 43200 600 2419200 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0