diff --git a/messageviewer/src/dkim-verify/dkimauthenticationstatusinfo.cpp b/messageviewer/src/dkim-verify/dkimauthenticationstatusinfo.cpp
index 2f9c1dd3..74ebfec8 100644
--- a/messageviewer/src/dkim-verify/dkimauthenticationstatusinfo.cpp
+++ b/messageviewer/src/dkim-verify/dkimauthenticationstatusinfo.cpp
@@ -1,71 +1,82 @@
 /*
    Copyright (C) 2018-2019 Laurent Montel <montel@kde.org>
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.
 
    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
 */
 
 #include "dkimauthenticationstatusinfo.h"
 #include "messageviewer_dkimcheckerdebug.h"
+
+#include <QRegularExpressionMatch>
 using namespace MessageViewer;
+//see https://tools.ietf.org/html/rfc7601
 DKIMAuthenticationStatusInfo::DKIMAuthenticationStatusInfo()
 {
 }
 
 bool DKIMAuthenticationStatusInfo::parseAuthenticationStatus(const QString &key)
 {
-    // 1) extract AuthservId and AuthVersion
+    // https://tools.ietf.org/html/rfc7601#section-2.2
+    // authres-header = "Authentication-Results:" [CFWS] authserv-id
+    //                                            [ CFWS authres-version ]
+    //                                            ( no-result / 1*resinfo ) [CFWS] CRLF
 
+    // 1) extract AuthservId and AuthVersion
+    QRegularExpressionMatch match;
+    const int index = key.indexOf(QRegularExpression(QStringLiteral("todo defined!")), 0, &match);
+    if (index != -1) {
 
+    }
 
     // 2) extract methodspec
 
     // 3) extract reasonspec (optional)
 
     // 4) extract propspec (optional)
 
     //TODO
     return true;
 }
 
 QString DKIMAuthenticationStatusInfo::authVersion() const
 {
     return mAuthVersion;
 }
 
 void DKIMAuthenticationStatusInfo::setAuthVersion(const QString &authVersion)
 {
     mAuthVersion = authVersion;
 }
 
 QString DKIMAuthenticationStatusInfo::reasonSpec() const
 {
     return mReasonSpec;
 }
 
 void DKIMAuthenticationStatusInfo::setReasonSpec(const QString &reasonSpec)
 {
     mReasonSpec = reasonSpec;
 }
 
 QString DKIMAuthenticationStatusInfo::authservId() const
 {
     return mAuthservId;
 }
 
 void DKIMAuthenticationStatusInfo::setAuthservId(const QString &authservId)
 {
     mAuthservId = authservId;
 }