diff --git a/docker/utils/Dockerfile b/docker/utils/Dockerfile
index 43c38ab8..edac01ee 100644
--- a/docker/utils/Dockerfile
+++ b/docker/utils/Dockerfile
@@ -1,73 +1,73 @@
 FROM apheleia/almalinux9
 
 ENV HOME=/opt/app-root/src
 
 # Install troubleshooting utilities
 RUN dnf -y install \
         --setopt 'tsflags=nodocs' \
         bind-utils \
         bzip2 \
         cmake \
         chromium \
         chromedriver \
         cyrus-imapd \
         cyrus-sasl-plain \
         expat-devel \
         gcc \
         git \
         libjpeg-turbo-devel \
         lsof \
         net-tools \
         nmap-ncat \
         openldap-clients \
         openssh-server \
         php \
         psmisc \
         iputils \
         mariadb \
         procps-ng \
         python3 \
         python3-devel \
         python3-pip \
         python3-pytz \
         strace \
         telnet \
         traceroute \
         vim-enhanced \
         wget \
         jq \
         ruby \
         zlib-devel && \
     dnf clean all
 
 RUN git clone https://github.com/libwbxml/libwbxml.git && \
     cd libwbxml && \
     mkdir build && \
     cd build && \
     cmake -D CMAKE_INSTALL_PREFIX=/usr .. && \
     make && \
     make install && \
     mv /usr/lib/libwbxml2.so* /usr/lib64/ && \
     cd .. && \
     rm -rf libwbxml
 
-RUN pip3 install distro xmltodict dnspython && \
+RUN pip3 install distro xmltodict dnspython dkimpy && \
     pip3 install \
     --global-option=build_ext \
     --global-option="-I/usr/include/libwbxml-1.0/wbxml/" \
     git+https://github.com/kanarip/python-wbxml#egg=wbxml
 
 # imapcli deps
 RUN gem install thor
 
 RUN id default || (groupadd -g 1001 default && useradd -d /opt/app-root/ -u 1001 -g 1001 default)
 
 RUN chgrp -R 0 /opt/app-root/src && \
     chmod -R g=u /opt/app-root/src && \
     chown -R 1001:0 /opt/app-root/src
 
 USER 1001
 
 WORKDIR ${HOME}
 
 COPY /rootfs /
diff --git a/docker/utils/rootfs/opt/app-root/src/dkimverify.py b/docker/utils/rootfs/opt/app-root/src/dkimverify.py
new file mode 100755
index 00000000..2c7ac82b
--- /dev/null
+++ b/docker/utils/rootfs/opt/app-root/src/dkimverify.py
@@ -0,0 +1,70 @@
+#!/usr/bin/env python
+
+from __future__ import print_function
+
+import sys
+import argparse
+
+import dkim
+
+def dns_get_txt(name, timeout=5):
+    # Do the actual dns lookup like so
+    # from dkim.dnsplug import get_txt
+    # result = get_txt(name, timeout)
+    # print(result)
+    # return result
+    # Or just hardocde a result like so
+    # return b'v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCyqAhkiHzqM5twQRO3BysIb7yyZZjAqZG2ufEIWcpK+fXo//zS9tMJz1Ic4A1Df+EESxBWZ068uBMORZ2CQSiuZKvOCsin35hNKc7V1nhz3GKOC0OxqCXOVqZIpUlCPBYz5iKi/8sXu+yhAbESpbPOYecgRKBykGmnZnyfN7y+0QIDAQAB'
+
+    #kolab.local
+    # return b'v=DKIM1; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx2xsAfAMWUjhbTSdNIc1hehRsF4n3P+V25x/z67cAO72EN8m7hgXvsTXaxd+fW8+zHCB7JMuLppRdBYBDS/1iDM9QKvp6coGedViVBqDJjEiEoHRRBuSNQOlGl/QNYxpEjCfuYmz87Jrz0iCKUFKgTre1sQvyToFhcW1R0i6Jrcsgm8Yz1cyMBaoZ5P+kRZ58MZsEnSGIxrj9M8upKTD9IZe60Tv8pixac1vtzV9/+RsZ0PI6li5n5nrorGACiy2jiBhuI4Gznm+AjYurPSVGnZOexQEK8mC/EEJ9aFLxlczD7m7t2rL+JUoP3WWLhTHzxtxtj1QmSkveZN4VeAKLwIDAQAB'
+  
+
+    #kolab.klab.cc
+    return b'v=DKIM1; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7JdTEn/T2MhB6KLbATJj4SGernbem4d7dAW7/kVRbiMB2EtPpQCR98eeXOOHcufXVc3w4BocXEnD47JPpkFYJBXWF32m4Y2SapBYbsXndN9fyXRrHO9wPJlW5QK5i9D/bRUznfaBJm54y+BuX0Ln/ippqFe6z3LPjmro9Y9WpRzevYG/TT69Iug5v4U/PA1/rEv+zZGQvNxInZYF7O2MFDbD2pYi7l4hWADP+iwOEc+Li5vPlEvOaUlSQCb06sc0/QBHDDyU2WaEJiYy/Mk2xCmSI44f3mQghmiNsu7vlPiztAYKjNyiVk8iWDttL9OV9qQyxHL18Q74UzJR6AylrwIDAQAB'
+
+    #old kolab.klab.cc
+    # return b'v=DKIM1; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA6ZjT1KkiHbBZSRyNWo7sn5zv2+WmRFJjtv2K34ZZhY7d44i0yXbzH+sppr+MGyUD1hiNCvP52LPicPKjET/HDlOVOB5Qaa+L6zEaPasN7je9n1iIiGqtKS86SgWNGA8sSaz76qw+Chn2PcWOruQxAh/qDHMDeEjgHg5Nlso50R2lqS7iKqiR37g9ZvnG+4lLO+yIIrzip8o9SE+cc4jxrCa2vuzmm4k8CKtugNmV6qo0ycQRW8dPU5yBg54Bm98+ci+Uk/bGBBxe6Zc82ce5vSJppi9BboNK5yVlIviStkHKDSo7r3gwtumBQXgEVJ3MD8SR727a2KZqGGT8G2q3yQIDAQAB'
+
+
+
+    #testmessage
+    # b'v=DKIM1; p=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'
+
+def main():
+    parser = argparse.ArgumentParser(
+        description='Verify DKIM signature for email messages.',
+        epilog="message to be verified follows commands on stdin")
+    parser.add_argument('--index', metavar='N', type=int, default=0,
+        help='Index of DKIM signature header to verify: default=0')
+    parser.add_argument('-v', '--verbose', action='store_true',
+        help='Verbose mode')
+    args=parser.parse_args()
+    if sys.version_info[0] >= 3:
+        # Make sys.stdin a binary stream.
+        sys.stdin = sys.stdin.detach()
+
+    message = sys.stdin.read()
+    # if args.verbose:
+    import logging
+    logger = logging.getLogger(__name__)
+    logger.setLevel(logging.DEBUG)
+    ch = logging.StreamHandler()
+    ch.setLevel(logging.DEBUG)
+    formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
+    ch.setFormatter(formatter)
+    logger.addHandler(ch)
+
+    d = dkim.DKIM(message, logger=logger)
+    # else:
+    #     d = dkim.DKIM(message)
+
+    res = d.verify(args.index,dnsfunc=dns_get_txt)
+    if not res:
+        print("signature verification failed")
+        sys.exit(1)
+    print("signature ok")
+
+
+if __name__ == "__main__":
+    main()