Newbie with MX problem

[mmkiely at home.com]

I've created a new virtual web host
www.columbiaFSC.mmwebserver.com

When I try to send an email to the domain I get the following message.

   ----- The following addresses had permanent fatal errors -----
<cfsc at columbiaFSC.mmwebserver.com>

   ----- Transcript of session follows -----
553 columbiafsc.mmwebserver.com. config error: mail loops back to me
(MX problem?)
554 <cfsc at columbiaFSC.mmwebserver.com>... Local configuration error

Here's what the configuration file looks like.

@               IN      SOA   ns.mmwebserver.com.
cfsc.columbiaFSC.mmwebserver.com. (
1 10800 3600 86400 1800
)
                IN      NS      ns.mmwebserver.com.
                IN      NS      sparc10.announce.com.
@               IN      A       63.73.48.63
                IN      MX      10 mmwebserver.com.
                IN      MX      100 announce.com.
ns              IN      A       63.73.48.63
linux           IN      CNAME   columbiaFSC.mmwebserver.com.
news            IN      CNAME   columbiaFSC.mmwebserver.com.
mail            IN      CNAME   columbiaFSC.mmwebserver.com.
www             IN      CNAME   columbiaFSC.mmwebserver.com.
ftp             IN      CNAME   columbiaFSC.mmwebserver.com.

Any help greatly appreciated.