ns03.lexsynergy.us has no MX records.
Question and response
Question
dig ns03.lexsynergy.us. MX
Answer
The response has no answer records.
Authority
lexsynergy.us. 300 SOA ns01.lexsynergy.us. dnsmaster.lexsynergy.us. 2011075583 604800 3600 1209600 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0