smtp.lsac.org has no CNAME records.
Question and response
Question
dig smtp.lsac.org. NS
Answer
The response has no answer records.
Authority
lsac.org. 3600 SOA ns1.ral.hostedsolutions.com. hostmaster.hostedsolutions.com. 2013062517 10800 3600 604800 604800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0