MTA's poor reputation

MTA's poor reputation

Hello, i have a problem sending a mail to the domail jne.gob.pe, i got this email:


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.

lcruz@jne.gob.pe, ERROR_CODE :554, ERROR_CODE :as.jne.gob.pe
Your access to this mail system has been rejected due to the sending MTA's poor reputation. If you believe that this failure is in error, please contact the intended recipient via alternate means.

 
 Received:from BMAxellW10 (190.117.193.119 [190.117.193.119]) by mx.zohomail.com with SMTPS id 1534355413543928.3976451330207; Wed, 15 Aug 2018 10:50:13 -0700 (PDT)   Message-ID:< 004001d434c0$6c462ad0$44d28070$@bmtech.pe>
 Date:Wed, 15 Aug 2018 12:50:13 -0500

 From:"Axell Alvarado" < axell.alvarado@bmtech.pe>   To:"'Luis Cruz Tregear'" < lcruz@jne.gob.pe>   Cc:"'Luis Bays'" < luis@bmtech.pe>

 Subject:RE: consulta urgente

 Content-Type:multipart/signed;

                protocol="application/x-pkcs7-signature";

                micalg=SHA1;

                boundary="----=_NextPart_000_0038_01D43496.81C9ECE0"



This is a problem for your side? or the receiver side? He can't change rules because is a government entity, but he asked me the mailserver IP address to whitelist it. Can you give me the IP he must add? Is this a fixed IP?
He can send mail to me without problems, the issue is just when i want to send.