받는메일만 유독 안됩니다..OTL

sendmail.cf는
DaemonPortOptions=Name=MTA

[root@www etc]# nslookup
> set type=mx
> www.domain.com
Server:         111.111.111.11
Address:        111.111.111.11#53

Non-authoritative answer:
*** Can't find www.domain.com: No answer

Authoritative answers can be found from:
domain.com
        origin = ns.adoptee.com
        mail addr = root.domain.com
        serial = 2005020601
        refresh = 21600
        retry = 3600
        expire = 604800
        minimum = 60

이렇게 나옵니다..

부디 밝은 서광을...