I have problem with zoho mail error_code :550
I have problem with zoho mail when i try to send mail to : it@elshammaa.com
i received this massage
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.
it@elshammaa.com, ERROR_CODE :551, ERROR_CODE :This mail server requires authentication before sending mail from a locally hosted domain. Please reconfigure your mail client to authenticate before sending mail.
Received:from mail.zoho.com by mx.zohomail.com
with SMTP id 1507743158345462.2966330501075; Wed, 11 Oct 2017 10:32:38 -0700 (PDT)
Message-ID:<15f0c7ed047.109cf4e5849088.480067890942705445@oyounmisrtravel.com>
Date:Wed, 11 Oct 2017 19:32:38 +0200
From:ahmed azesm <it@oyounmisrtravel.com>
User-Agent:Zoho Mail
To:"it" <it@elshammaa.com>
Cc:"aabdelatheem" <a.abdelatheem@gmail.com>
Subject:test
Content-Type:multipart/alternative;
boundary="----=_Part_158887_664019649.1507743158344"
------------------------------------------------------
A message that you sent could not be delivered to one or more of its recipients. This is a permanent error.
it@elshammaa.com, ERROR_CODE :551, ERROR_CODE :This mail server requires authentication before sending mail from a locally hosted domain. Please reconfigure your mail client to authenticate before sending mail.
Received:from mail.zoho.com by mx.zohomail.com
with SMTP id 1507743158345462.2966330501075; Wed, 11 Oct 2017 10:32:38 -0700 (PDT)
Message-ID:<15f0c7ed047.109cf4e5849088.480067890942705445@oyounmisrtravel.com>
Date:Wed, 11 Oct 2017 19:32:38 +0200
From:ahmed azesm <it@oyounmisrtravel.com>
User-Agent:Zoho Mail
To:"it" <it@elshammaa.com>
Cc:"aabdelatheem" <a.abdelatheem@gmail.com>
Subject:test
Content-Type:multipart/alternative;
boundary="----=_Part_158887_664019649.1507743158344"
------------------------------------------------------
when i try send mail from other side i received this massage from other server
MailEnable: Message could not be delivered to some recipients.
The following recipient(s) could not be reached:
Recipient: [SMTP:it@oyounmisrtravel.com]
Reason: Remote SMTP Server Returned: 550 Requested action not taken: mailbox unavailable or not local.
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this is my dns configuration