0

I got an notice that some clients werent receiving their emails, all clients used hotmail accounts, while i looked into logs i got this part

Sep 25 07:52:51 s22090 named[25045]: client 127.0.0.1#44056: query (cache) 'hotmail.com/MX/IN' denied
Sep 25 07:52:51 ...#56174: query (cache) 'mx2.hotmail.com/A/IN' denied
Sep 25 07:52:51 ...#59417: query (cache) 'mx2.hotmail.com/AAAA/IN' denied
Sep 25 07:52:51 ...#54682: query (cache) 'mx1.hotmail.com/A/IN' denied
Sep 25 07:52:51 ...#60299: query (cache) 'mx1.hotmail.com/AAAA/IN' denied
Sep 25 07:52:51 ...#54353: query (cache) 'mx4.hotmail.com/A/IN' denied
Sep 25 07:52:51 ...#55171: query (cache) 'mx4.hotmail.com/AAAA/IN' denied
Sep 25 07:52:51 ...#55501: query (cache) 'mx3.hotmail.com/A/IN' denied
Sep 25 07:52:51 ...#33547: query (cache) 'mx3.hotmail.com/AAAA/IN' denied
Sep 28 06:39:52 ...#52626: query (cache) 'd7ddfeb7120a9845bbb8f56e789c4f.pamx1.hotmail.com/A/IN' denied
Sep 28 06:39:52 ...#44450: query (cache) 'd7ddfeb7120a9845bbb8f56e789c4f.pamx1.hotmail.com/AAAA/IN' denied

Which i cant really understand why it blocks/denies, anyone can help?

edit

Return-Path:    <spedeus@s22090.vps.name-servers.gr>
X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on s22090.vps.name-servers.gr
X-Spam-Level:   **
X-Spam-Status:  No, score=2.4 required=5.0 tests=HTML_IMAGE_ONLY_20, HTML_MESSAGE,HTML_MIME_NO_HTML_TAG,MIME_HTML_ONLY,NO_RELAYS autolearn=no version=3.3.1
X-Original-To:  info@spedeus.com
Delivered-To:   info.spedeus@s22090.vps.name-servers.gr
Received:   by s22090.vps.name-servers.gr (Postfix, from userid 507) id 3BDC9192511F; Wed, 7 Oct 2015 14:35:57 -0400 (EDT)
To: info@spedeus.com
Subject:    xxxxx
X-PHP-Originating-Script:   507:class.phpmailer.php
Date:   Wed, 7 Oct 2015 14:35:57 -0400
From:   "Spedeus.com" <noreply@spedeus.com>
Message-ID: <b1ea97c7e45bfc0362e77ee9d6470b0c@www.spedeus.com>
X-Priority: 3
X-Mailer:   PHPMailer 5.2.1 (http://code.google.com/a/apache-extras.org/p/phpmailer/)
MIME-Version:   1.0
Content-Transfer-Encoding:  8bit
Content-Type:   text/html; charset="UTF-8"

the DNS records

mail    A - IPv4 Address    185.25.22.90
spedeus.com MX - Mail Server    5 mail.spedeus.com.
spedeus.com SPF - Sender Permitted From v=spf1 a mx a:spedeus.com ip4:185.25.22.90 ?all

edit2

Oct  8 05:33:24 s22090 postfix/pickup[13686]: 9AD7619265B0: uid=0 from=<info@spedeus.com>
Oct  8 05:33:24 s22090 postfix/cleanup[15659]: 9AD7619265B0: message-id=<1444296804.15654@spedeus.com>
Oct  8 05:33:24 s22090 postfix/qmgr[13687]: 9AD7619265B0: from=<info@spedeus.com>, size=602, nrcpt=1 (queue active)
Oct  8 05:33:26 s22090 postfix/smtp[15661]: 9AD7619265B0: to=<xxxxx@hotmail.com>, relay=mx4.hotmail.com[65.55.37.104]:25, delay=2.1, delays=0.12/0.01/0.64/1.3, dsn=2.0.0, status=sent (250  <1444296804.15654@spedeus.com> Queued mail for delivery)
Oct  8 05:33:26 s22090 postfix/qmgr[13687]: 9AD7619265B0: removed

As i see, it gets removed from queue after queued for delivery.

Gntem
  • 123
  • 9
  • Your email logs would be more helpful than your named logs here. – Jenny D Oct 08 '15 at 09:00
  • @JennyD i updated with the maillog entries, but i dont think it supplies any useful information or am i missing something – Gntem Oct 08 '15 at 09:40
  • 1
    It shows some very useful information indeed - namely that Hotmail accepted the email for delivery. This means that whatever causes the non-delivery is happening **within** their system. (it's most likely their antispam algorithms - did your recipients check their spam folders?) – Jenny D Oct 08 '15 at 09:49
  • @JennyD yes they double-checked i even created an account just so i could check it, the email never goes through , not even in junk folders and the settings in email about spam are the default ones. So i assume that is something internal of the hotmail system. – Gntem Oct 09 '15 at 09:07
  • It is definitely something internal with them. They have been silently discarding mail for a long time now, without informing either the sender or the recipient. – Jenny D Oct 09 '15 at 14:26

1 Answers1

1

Perhaps you need have/check a reverse dns entry on the domain from which the emails exit your network. How does the headers look like? Does delivering to gmail work?

Some are suggesting setting up DKIM. If available I'd recommend (instead of trying to hack your config to fool headers) is to see if you can use a relay to send emails from that server instead, a designated mail server somewhere on your network such as Exchange. In that case (and it looks like you're using postfix) in /etc/postfix/main.cf add a line relayhost = 10.x.x.x the IP being said relay server IP

Recct
  • 360
  • 1
  • 3
  • 20
  • Delivering to gmail/yahoo/other is successful. About the headers, i dont get a mail delivery failure so i assume you ask for headers of the mail i send? – Gntem Oct 08 '15 at 08:12
  • Yes the sent emails to see what domain of yours is listed in there and if it's a valid one like mail.yourcompany.com or something – Recct Oct 08 '15 at 08:15
  • updated the question with the mail headers, please take a look – Gntem Oct 08 '15 at 08:19