smtp receive mail error

ERROR:
(reason: 553 5.3.5 system config error)
config error: mail loops back to me (MX problem?)
554 5.3.5 Local configuration error
Diagnostic-Code: SMTP; 553 5.3.5 system config error

SOLUTION:
If it is Sendmail that you're using, then you should be able to just edit the /etc/mail/local-host-names file and add your domain names that the MTA should recognize as being its self.

REFERENCE:
http://www.webdeveloper.com/forum/showthread.php?t=173882
open webmail