We receive around 50+ emails from a bank that we work with. Sometimes, their emails are delayed by one day. We are trying to understand the issue and we are trying to fix it. We have put the domain to our whitelist. However, this has not resolved the issue. The header is below:

Return-Path: <hizmet@akbank.com>
Delivered-To: finans@kisan.com.tr
Received: from eu01.server.plus
                by eu01.server.plus with LMTP
                id +GgqGsZrO125hjMA7YZH9Q
                (envelope-from <hizmet@akbank.com>)
                for <finans@kisan.com.tr>; Fri, 26 Jul 2019 23:08:22 +0200
Return-path: <hizmet@akbank.com>
Envelope-to: finans@kisan.com.tr
Delivery-date: Fri, 26 Jul 2019 23:08:22 +0200
Received: from mgtexc09.akbank.com ([]:58257)
                by eu01.server.plus with esmtps (TLSv1.2:ECDHE-RSA-AES256-SHA384:256)
                (Exim 4.92)
                (envelope-from <hizmet@akbank.com>)
                id 1hr7Ro-00Ejfk-A7
                for finans@kisan.com.tr; Fri, 26 Jul 2019 23:08:22 +0200
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
    s=akbank; d=akbank.com;
X-EMID: ELC-I-111-0-23615124-20190726175320-N
X-VirtualMta: urgent
X-ExpireDate: 2019/07/27
MIME-Version: 1.0
From: =?utf-8?Q?Akbank_=C5=9Eube_Bankac=C4=B1l=C4=B1=C4=9F=C4?=
=?utf-8?Q?=B1?= <hizmet@akbank.com>
Date: Fri, 26 Jul 2019 17:53:20 +0300
Subject: Akbank E-Posta
Content-Type: multipart/mixed;
Message-ID: <09a2d864143841a19be4a15d8f580efa@excmgts02.mgtsdmn.akb>
X-Spam-Status: No, score=-104.0
X-Spam-Score: -1039
X-Spam-Bar: ---------------------------------------------------
X-Ham-Report: Spam detection software, running on the system "eu01.server.plus",

has NOT identified this incoming email as spam.  The original
message has been attached to this so you can view it or label
similar future email.  If you have any questions, see
root\@localhost for details.

Content preview:  Deðerli Müþterimiz, Hesabýnýzýn hareketlerini içeren
    ekstre bilgisi ekte yer almaktadýr. Bilginize sunarýz. 
 Content analysis details:   (-104.0 points, 7.0 required)
  pts rule name              description
---- ---------------------- --------------------------------------------------
-100 USER_IN_WHITELIST      From: address is in the user's white-list
-0.0 SPF_PASS               SPF: sender matches SPF record
  1.1 DATE_IN_PAST_06_12     Date: is 6 to 12 hours before Received: date
-2.0 RCVD_IN_RP_SAFE        RBL: Sender in ReturnPath Safe - Contact
                             [Return Path SenderScore Safe List (formerly]
                     [Habeas Safelist) - <http://www.senderscorecertified.com>]
  0.0 HTML_MESSAGE           BODY: HTML included in message
  0.0 T_OBFU_PDF_ATTACH      BODY: PDF attachment with generic MIME type
  0.1 MIME_HTML_ONLY         BODY: Message only has text/html MIME parts
-0.1 DKIM_VALID_EF          Message has a valid DKIM or DK signature from
                             envelope-from domain
  0.1 DKIM_SIGNED            Message has a DKIM or DK signature, not necessarily
-0.1 DKIM_VALID_AU          Message has a valid DKIM or DK signature from
                             author's domain
-0.1 DKIM_VALID             Message has at least one valid DKIM or DK signature
-3.0 RCVD_IN_RP_CERTIFIED   RBL: Sender in ReturnPath Certified -
                             Contact cert-sa@returnpath.net
                             [Return Path SenderScore Certified {formerly]
                       [Bonded Sender} - <http://www.senderscorecertified.com>]
-0.0 DKIMWL_WL_HIGH         DKIMwl.org - Whitelisted High sender
X-Spam-Flag: NO
X-EsetId: 37303A299E82206F677464

Although this message appears to have been sent on Friday (July 26th), it was received by our Outlooks on Saturday (July 27th).

We are using a third party webhosting service with managed VPS. Although we have partial access to cpanel and WHM, the configurations we can do are limited.

Any help would be appreciated!

  • Google for "greylisting". – Rob Jul 30 '19 at 12:19
  • @Rob but with greylisting, once authenticity has been established emails won't be grey listed, so I wonder if that is the problem. – Steve Jul 31 '19 at 6:15

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