myworkdaysite.com has no MX records.
Question and response
Question
dig myworkdaysite.com. MX
Answer
The response has no answer records.
Authority
myworkdaysite.com. 60 SOA dns1.p01.nsone.net. noc.workday.com. 319 60 60 1209600 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0