Can't Send Emails

[souvik2701]

Note : Some Links in the emails were removed due to privacy and security reasons

Hello Guys, So
I've Just Set Up some 5 Email ID's

So, For Testing I've Send them a test email from my gmail account
All of my email accounts had received the email successfully !

Screen Shot :




So, I've Tried To Reply To The My Gmail Via one of those 5 accounts..



As Soon as I've Sent the mail from Webmail, I've received a Mail from 'Mail Delivery System'





That Mail Contains The Following :
Note : Due To Privacy And Security Reasons I've Changed my Gmail Account ID To souvik2701@gmail.com and Website Mail (From which I've Tried To Send The Email) to mail@abcd.com
I've Also Changed some Part With '*'

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. The following address(es) failed:

souvik2701@gmail.com
SMTP error from remote mail server after end of data:
host gmail-smtp-in.l.google.com [2a00:1450:400c:c06::1b]:
550-5.7.1 [2a01:7e01::f03c:91ff:fe0a:66b6] Our system has detected that this
550-5.7.1 message does not meet IPv6 sending guidelines regarding PTR records
550-5.7.1 and authentication. Please review
550-5.7.1 https://support.google.com/mail/?p=ipv6 ... tion_error for more
550 5.7.1 information. cc3si28547232wjc.203 - gsmtp

------ This is a copy of the message, including all the headers. ------

Return-path: <mail@abcd.com>
Received: from admin by abcd.com with local (Exim 4.84_2)
(envelope-from <mail@abcd.com>)
id 1bCMoW-00047P-Jh
for souvik2701@gmail.com; Mon, 13 Jun 2016 08:01:40 +0000
To: souvik2701@gmail.com
Subject: Thanks For That Chief !
X-PHP-Originating-Script: 0:rcube.php
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII;
format=flowed
Content-Transfer-Encoding: 7bit
Date: Mon, 13 Jun 2016 13:31:40 +0530
From: mail@abcd.com
Message-ID: <99a5e26f30*******846a7e8fa4f0dbf@abcd.com>
X-Sender: mail@abcd.com
User-Agent: Roundcube Webmail/1.2.0

I'm Here at Cocho Since 2011 |But Never Felt that much happy as last
night,
Seriously I am Glad To Meet You Bro.
I'm Just Loving It Seriously !! :D

Regards..

Please Help Me Out,
What Should I Do Now..

[Syeef]

I guess the issue is:

Code: Select all

550-5.7.1 message does not meet IPv6 sending guidelines regarding PTR records

1. You can try setting the proper PTR records for your IPv6 IP.

2. Or disable IPv6 from Exim, which I did and I assume most of us do.

To disable IPv6 in Exim:

Edit this file in SSH:

Code: Select all

nano /etc/exim/exim.conf

And add the following line in exim.conf:

Code: Select all

disable_ipv6=true

Save the file and restart exim:

Code: Select all

service exim restart

That should solve your problem.

PS. also make sure your Domain DNS has DKIM and SPF entries.