Since i changed to another VPS server my mail is blocked when i sent it to a Gmail account

this is the error mail form Gmail :

his 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:

  [email protected]
    SMTP error from remote mail server after end of data:
    host gmail-smtp-in.l.google.com [2a00:1450:4013:c01::1b]:
    550-5.7.1 [2a01:238:43fb:cf00:3514:6d04:249e:ee45      12] Our system has
    550-5.7.1 detected that this message is likely unsolicited mail. To reduce the
    550-5.7.1 amount of spam sent to Gmail, this message has been blocked. Please
    550-5.7.1 visit
    550-5.7.1 http://support.google.com/mail/bin/answer.py?hl=en&answer=188131 for
    550 5.7.1 more information. vp7si7215736wjc.112 - gsmtp

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

Return-path: <[email protected]>
Received: from mail-la0-f53.google.com ([])
        by develstag01.stylehosting.eu with esmtpsa (TLSv1:RC4-SHA:128)
        (Exim 4.76)
        (envelope-from <[email protected]>)
        id 1XjYmg-0000ps-6b
        for [email protected]; Wed, 29 Oct 2014 20:19:54 +0100
Received: by mail-la0-f53.google.com with SMTP id mc6so3105595lab.26
        for <[email protected]>; Wed, 29 Oct 2014 12:19:53 -0700 (PDT)
MIME-Version: 1.0
X-Received: by with SMTP id aa6mr13783081lbc.29.1414610393670;
 Wed, 29 Oct 2014 12:19:53 -0700 (PDT)
Received: by with HTTP; Wed, 29 Oct 2014 12:19:53 -0700 (PDT)
Date: Wed, 29 Oct 2014 20:19:53 +0100
Message-ID: <CABS0uggkETx98bV1OypdB1zQZp=Lb+DEsJb7gEYd5=EXVRWTrA@mail.gmail.com>
Subject: Even een test bericht
From: Ricardo van Laarhoven <[email protected]>
To: Wyannah Prikanowski <[email protected]>
Content-Type: multipart/alternative; boundary=001a11c38e9602ade4050694a615

Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

Hoiu wyannah,

ik kan geen mails sturen...... ik moet even testen of dit geen spam is..

dus darom typ ik maar een stuk langer

=C3=ADk hoop dat deze wel aankomt..

Met vriendelijke groet,

Ricardo van Laarhoven
[email protected]
06 18 36 50 18
Kvknr:   58325239
BTWnr: NL216018237B01
IBAN: NL07 INGB 0008 5382 22

Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hoiu wyannah,<div><br></div><div>ik kan geen mails sturen.=
..... ik moet even testen of dit geen spam is..</div><div><br></div><div><b=
r></div><div>dus darom typ ik maar een stuk langer=C2=A0</div><div><br></di=
v><div>=C3=ADk hoop dat deze wel aankomt..<br clear=3D"all"><div><br></div>=
-- <br><div dir=3D"ltr"><div><div><div><div><div><div>Met vriendelijke groe=
t,<br><br></div>Ricardo van Laarhoven<br></div><a href=3D"http://www.revolu=
tionweb.nl" target=3D"_blank">www.revolutionweb.nl</a><br></div><a href=3D"=
mailto:[email protected]" target=3D"_blank">[email protected]</a><b=
r>06 18 36 50 18<br></div>Kvknr:=C2=A0=C2=A0 58325239<br></div>BTWnr: NL216=
018237B01<br></div>IBAN: NL07 INGB 0008 5382 22<br></div>

  • Your VPS server IP is probably blacklisted. Oct 30, 2014 at 13:23
  • This question appears to be off-topic because it is about mail server setup. Oct 30, 2014 at 13:24
  • Have you checked your new VPS' IP on blacklists, etc?
    – user3919
    Oct 30, 2014 at 13:28
  • Kinda weird to lock it, after another admin moved it here... :)
    – Martijn
    Oct 30, 2014 at 14:51
  • Not sure why this was moved to Webmasters, it should probably go to Server Fault. Oct 31, 2014 at 12:10

2 Answers 2


This is because they mark it as spam (they're kinda telling you that allready), Gmail is very strict.

There are a lot of factor which decide if something is spam or not. Some words add points, embedded images do etc etc.
There are also factors which decrease the points you get, like a whitelisted hoster, setting up an SPF record or a DKIM.

The difference between spam and notspam is rather sensative. Could be that because your new host has a small increase in points (and increase is bad), or your previous hoster made a decrease in points.

  • All About Spam is a great tool. You mail them, you get a rapport what you did right/wrong
  • This spamassassin list is great to read, at least once. They indicate the pentalties/bonusses.

Mxtoolbox says your server has a DNS mismatch, which is a flag used to detect spam. So it could be due to the "develstag01" they are using instead of "vsrv02": http://mxtoolbox.com/SuperTool.aspx?action=smtp%3a85.214.116.105&run=toolpage

Both resolve to but its wonked somewhere - Not sure how you're set up, but that would be a starting point to check out.

  • Also, you appear to be connecting to Gmail over IPv6, so you should make sure you have the proper DNS entries for those addresses, as well. Oct 31, 2014 at 12:21

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