smtp.weendeavor.com has no MX records.
Question and response
Question
dig smtp.weendeavor.com. MX
Answer
The response has no answer records.
Authority
weendeavor.com. 240 SOA ns1.ccrtc.com. italerts.weendeavor.com. 2025122200 14400 900 86400 240
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0