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Email Sending Error
https://forum.linode.com/viewtopic.php?f=11&t=12361		 Page 1 of 1
Author:  hpt [ Thu Oct 29, 2015 8:19 am ]
Post subject:  Email Sending Error
Hello Linode Developers,

I am new to vps and joined Linode a few weeks ago. I have difficulties in email sending problem. I setup wordpress sites in my linode. WordPress comments, sign up, forget password, anyemail are not working. So, I followed the steps as Linode docs said

Here is the first step I try, it doesn't work for me
https://www.linode.com/docs/email/exim/ ... e-pangolin

So, How should I make it work?

Next things, I am not sure about that documentation is working properly or not?????? Have they tested it or not??
Author:  rfeliciano [ Fri Oct 30, 2015 2:09 pm ]
Post subject:  Re: Email Sending Error
Sharing the errors you are getting, the version of WordPress you're using, the distro (and version) that you are using, etc would be helpful for someone trying to help.
Author:  hpt [ Fri Oct 30, 2015 9:23 pm ]
Post subject:  Re: Email Sending Error
this is the error message that I got from /Mailbox/new/Emailfilename13454

Code:
  demo_user@gmail.com
    SMTP error from remote mail server after end of data:
    host gmail-smtp-in.l.google.com [2607:f8b0:400d:c06::1a]:
    550-5.7.1 [2600:3c03::f03c:91ff:fe67:ec43] 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_authentication_error for more
    550 5.7.1 information. f128si5179812qhe.29 - gsmtp

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

Return-path: <tester@linuxbox.creativeocean.net>
Received: from tester by linuxbox.creativeocean.net with local (Exim 4.76)
        (envelope-from <tester@linuxbox.creativeocean.net>)
        id 1Zs6aV-0004G6-KF
        for hlaporthein@gmail.com; Fri, 30 Oct 2015 16:37:11 +0630
Subject: Testing
To: <demo_user@gmail.com>
X-Mailer: mail (GNU Mailutils 2.2)
Message-Id: <E1Zs6aV-0004G6-KF@linuxbox.creativeocean.net>
From: tester_leader <tester@linuxbox.creativeocean.net>
Date: Fri, 30 Oct 2015 16:37:11 +0630

This is a test.



This is how I configure the hosts file

Code:

Here is my hosts file configuration from /etc/hosts, 
127.0.0.1       localhost.localdomain localhost
127.0.0.1       linuxbox.creativeocean.net      linuxbox
45.XX.XXX.45    mail.creativeocean.net  mail

# The following lines are desirable for IPv6 capable h
::1     ip6-localhost ip6-loopback



Please help me, Thanks in advanced
Author:  rfeliciano [ Sun Nov 01, 2015 3:38 pm ]
Post subject:  Re: Email Sending Error
There may be more than one issue but so far, this error message:
Quote:
550-5.7.1 [2600:3c03::f03c:91ff:fe67:ec43] Our system has detected that this
550-5.7.1 message does not meet IPv6 sending guidelines regarding PTR records

is basically saying that you don't have reverse DNS configured for your Linode's IPv6 address. Google is complaining about it and wants you to fix it.

Here's some information we have on reverse DNS (PTR) records: https://www.linode.com/docs/networking/ ... everse-dns
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