ERROR_CODE :554, ERROR_CODE :Service unavailable; Client host [sender-of-o52.zoho.com] blocked using Barracuda Reputation

ERROR_CODE :554, ERROR_CODE :Service unavailable; Client host [sender-of-o52.zoho.com] blocked using Barracuda Reputation

Dear Team,

Our emails are bouncing continuously when we send to a particular domain (oapfd.com) and (mhd.co.om).

Could you please review the bounced message below and provide a permanent solution pelase:

 

 

-----Original Message-----

From: mailer-daemon@mail.zoho.com [mailto:mailer-daemon@mail.zoho.com]

Sent: Saturday, July 29, 2017 10:04 PM

To: rvparambi@ncpmoman.com

Subject: Undelivered Mail Returned to Sender

 

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.

 

ceo@oapfd.om, ERROR_CODE :554, ERROR_CODE :Service unavailable; Client host [sender-of-o52.zoho.com] blocked using

                                                Barracuda Reputation;

                                                http://www.barracudanetworks.com/reputation/?r=1&ip=85.154.101.66

 

 

 

 Received:from SMEFRVPNEW (85.154.101.66 [85.154.101.66]) by mx.zohomail.com

                with SMTPS id 1501351351858478.31323332431623; Sat, 29 Jul 2017 11:02:31 -0700 (PDT)  Message-ID:<024b01d30894$80ed8c70$82c8a550$@ncpmoman.com>

 Date:Sat, 29 Jul 2017 21:59:56 +0400

 From:"Raphael Parambi" <rvparambi@ncpmoman.com>  To:"'Abdul Rahman Al Rawahi'" <anrawahi@smefoman.com>,

                "'Dr.Dhafir Awadh Al-Shanfari'" <ceo@oapfd.om>,

                "'Sami AL-Kharusi'" <ksami@squ.edu.om>,

                "'Ahmed Al Busaidi'" <ahmed_fin@hotmail.com>,

                "'aissa'" <aissa@bankmuscat.com>,

                "'Malak Alshaibani'" <malak.alshaibani@nbc.om>,

                "'Eyhab AlHajj'" <eyhab@alhajj.om>,

                "'khalid'" <khalid@riyada.om>,

                "'Parambi RV'" <rvparambi@smefoman.com>  Cc:"'Salah Hilal Al Maawali'" <shmaawali@smefoman.com>,

                "'Sharma LR'" <lrsharma@smefoman.com>,

                "'ceo smef'" <ceo@smefoman.com>

 Subject:RE: Lighthouse

 Content-Type:multipart/related;

                boundary="----=_NextPart_000_024C_01D308B6.0800B310"

 


Thanks,

Wasim. R