Messages being returned?
Messages being returned?
Hi Folks
I'm fairly new to Zoho and am suddenly having messages returned with the following message:
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.
shakari2@sapo.pt Invalid Address, ERROR_CODE :554, ERROR_CODE :sorry, your IP is rejected because it was flagged as an open-relay or abuser; o seu IP foi rejeitado por estar listado como open-relay ou spammer (001)
Received:from 172.29.241.253 (172.29.241.253 [172.29.241.253]) by mx.zohomail.com
with SMTP id 1341245810535193.9362761179343; Mon, 2 Jul 2012 09:16:50 -0700 (PDT)
Message-ID:<138487ae691.-4447563809428780669.1815802939251762062@zoho.com>
Date:Mon, 02 Jul 2012 17:16:50 +0100
From:Steve Robinson <numzaan@zoho.com>
User-Agent:Zoho Mail
To:"Susan Robertson " <shakari2@sapo.pt>
Subject:Fwd: Fw: B & B
Content-Type:multipart/alternative;
boundary="----=_Part_60944_1880509356.1341245810320"
Can someone please tell me why and how I prevent this happening?