E-mail Inbound Being Blocked

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From: Chris White - Stirling (cw_at_NOSPAMstirtech.co.uk)
Date: 06/30/04 

Date: Wed, 30 Jun 2004 02:23:22 -0700

Hi,

We have our mail forwarded to our server, but recently it
has stopped coming in and i think its probably some
fiddling we have been doing.

Anyway, the message that gets returned to senders sending
to us from outside the company is as follows:

This message was created automatically by mail delivery
software.

A message that you sent could not be delivered to one or
more of its
recipients. This is a permanent error. The following
address(es) failed:

  cw@domain.co.uk
    SMTP error from remote mailer after RCPT
TO:<cw@domain.co.uk>:
    host 194.159.243.143 [194.159.243.143]: 550 relaying
to <cw@domain.co.uk> prohibited by administrator

------ This is a copy of the message, including all the
headers. ------
<original message was shown here>

Any ideas why the Admin is prohibiting the relay to my
domain mail boxes? Not just mine but everyones in my
company are bouncing back to the senders.

Please help!!!

Regards

Chris White

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