Hello,
currently some emails are randomly bouncing, and it doesn't make sense, this is the situation:
CBOS.cl is using Zoho (the MX records are setup correctly)
NORCHAM.cl is using Gmail (the MX records are setup correctly).
There are many emails @norcham.cl and @cbos.cl, however sometimes when one of the users try sending a mail from norcham.cl (google's mail), I get the following error:
From: <mailer-daemon@mail.zoho.com>
Date: Tue, Jun 30, 2015 at 12:27 PM
Subject: Undelivered Mail Returned to Sender
To: account1@norcham.cl
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.
account2@norcham.cl
Invalid Address, ERROR_CODE :550, ERROR_CODE :Please turn on SMTP Authentication in your mail client.
sender163-mail.zoho.com
[74.201.84.163]:25948 is not permitted to relay
through this server without authentication.
account3@norcham.cl
Invalid Address, ERROR_CODE :550, ERROR_CODE :Please turn on SMTP Authentication in your mail client.
sender163-mail.zoho.com
[74.201.84.163]:25948 is not permitted to relay
through this server without authentication.
Received:from
mail-qg0-f43.google.com
(
mail-qg0-f43.google.com
[209.85.192.43]) by
mx.zohomail.com
with SMTPS id 1435678049796569.552258052481; Tue, 30 Jun 2015 08:27:29 -0700 (PDT)
Message-ID:<
CAC+HkpFfAm-GE1JF5PW14SBXzPbpoLCC2sS8-ROtPJqHJj12_Q@mail.gmail.com
>
Date:Tue, 30 Jun 2015 12:27:27 -0300
From:User1 <
account1@norcham.cl
>
To:User4 <
user4@gmail.com
>
Cc:User2 <
user2@norcham.cl
>, User3 <
user3@norcham.cl
>
Subject:Re: cnc
Content-Type:multipart/
alternative; boundary=
001a114705920db2950519bdd8eb
*This happened using Gmail (Not Outlook, or any other clients)