Relay access denied

[brainz]

Hi Guys,

Please can i ask why i cant sent email from a email account or all email accounts i have setup for my domain...

here have a look...

could not be delivered to some or all of the intended recipients.


User<xxx> - (554 <xxx>: Relay access denied)
User<xxx> - (554 <xxx>: Relay access denied)

here i did this as well

FAIL Acceptance of postmaster address ERROR: One or more of your mailservers does not accept mail to xxx. Mailservers are required (RFC822 6.3, RFC1123 5.2.7, and RFC2821 4.5.1) to accept mail to postmaster.

xxx postmaster response:
>>> RCPT TO:<xxx>
<<< 554 <xxx>: Relay access denied

and this

PASS Open relay test OK: All of your mailservers appear to be closed to relaying. This is not a thorough check, you can get a thorough one here.

xxx OK: 554 <Not.abuse.see.www.DNSreport.com.from.IP.203.56.12 7.1@DNSreport.com>: Relay access denied

any suggestion would be aprechiated...

regards
brainz