wps5011-prod.pub.phpnet.org has no MX records.
Question and response
Question
dig wps5011-prod.pub.phpnet.org. MX
Answer
The response has no answer records.
Authority
phpnet.org. 1800 SOA ns.phpnet.org. grenoble.phpnet.org. 2026022633 3600 1800 1209600 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0