I can't send email from Gmail to Zoho

I can't send email from Gmail to Zoho

Hi,

I am unable to send email from gmail to zoho. I have tested with yahoo as well, it works. This is what I got from gmail:

Delivery to the following recipient failed permanently:

      nugroho.tjahjono@palapaculture.com

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain palapaculture.com by palapaculture.com. [110.232.141.215].

The error that the other server returned was:
550-Please turn on SMTP Authentication in your mail client.
550-mail-qc0-f170.google.com [209.85.216.170]:33608 is not permitted to relay
550 through this server without authentication.


----- Original message -----

DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20120113;
        h=mime-version:date:message-id:subject:from:to:content-type;
        bh=xSEaJ9cfEaneo6zB15pSJZxXc5z890k83oHsBPDSpzc=;
        b=AU42NXXgo3tIJGFKWr59/A0YAyw1ZexEhzhNXpahJTz3WC6dmhk/NT9OE8vHluSG/m
         0sRrn8EhTuviE6ferIg1UV660pAA+nW28slt8UW5/vs/AZK8chdw6zCdL2uMKCbbQswY
         5Peg+ozCJ/6kBm1e45jNmD5KtO/5TCFiZUGJlI/hhIRCzsu00q+H920+As2z7fqBbzLZ
         3gLXDDtAToOwwnIfhsc3MmM1cRFwcYz8RhMRkfCNuEhiS56bvgzzOk0NMjxyhBnefX9x
         O9bCJzgX9xzMWuSPyrhPgz37GohT6cNPA4hNrMeh0+UP33rOuN7jpvkTue4BwKknsw/f
         t8KQ==
MIME-Version: 1.0
X-Received: by 10.229.52.136 with SMTP id i8mr1301389qcg.6.1413460031586; Thu,
 16 Oct 2014 04:47:11 -0700 (PDT)
Received: by 10.140.142.17 with HTTP; Thu, 16 Oct 2014 04:47:11 -0700 (PDT)
Date: Thu, 16 Oct 2014 22:47:11 +1100
Message-ID: <CAB8S-Ocg_Dpwumz54U67ScmnUmPi= zNPA6YpYAZJjtEKhx9fdQ@mail.gmail.com>
Subject: uh
From: Nugi Tjahjono < nugi.tjahjono@gmail.com>
To: Nugroho Tjahjono < nugroho.tjahjono@palapaculture.com>
Content-Type: multipart/alternative; boundary=001a113381f2164660050588cf22

-j

Does anyone know why?