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Product Information
DkimX is an add-on for MS Exchange Server 2013/2016/2019 which supports DKIM-signing of outgoing messages and verification of incoming messages by using the following message authentication mechanisms: SPF, DKIM, DMARC.


  • DKIM Signer:
    • Supports rule-based message processing for outgoing messages in an MS Exchange Server environment.
    • Supports any number of e-mail domains.
    • Allows configuring every aspect of the DKIM-specification (RFC 6376, RFC 8301, RFC 8463) for signing messages (including 3rd party signatures and multiple signatures).
  • Verifier:
    • SPF (RFC 7208) verification
    • DKIM (RFC 6376, RFC 8301, RFC 8463) verification
    • DMARC (RFC 7489) verification
    • DMARC report generator:
      • Full support for DMARC aggregate reports, including support for intraday report generation periods.
      • Full support for DMARC failure reports.
      • Support for hosting environments: distinct settings depending on recipient domains.
    • The verification results are published by adding Authentication-Results header fields (RFC 7601) and optionally custom header fields to evaluated messages.
  • Administration by using the DkimX Management Shell (PowerShell-based command line interface) or DkimX Management Console (GUI implemented as an MMC 3.0 Snap-In).
  • Centralized management of your DkimX environment can optionally be implemented by configuring Inter-Server-Communication (ISC) between your DkimX instances.
  • Supports easy backup and restore of configuration data.
  • Monitoring and troubleshooting:
    • Message logs (DKIM signer message log, verifier message log)
    • Application-specific event logs
    • Performance counters
  • Low resource usage, excellent performance and high scalability of the processing engines, whose implementations are based on asynchronous tasks.
Supported OS: Windows Server 2012 (R2)
Windows Server 2016
Windows Server 2019 (Server Core & Desktop Experience)
Supported E-mail Servers: MS Exchange Server 2013 (CU21 or later)
MS Exchange Server 2016 (CU11 or later)
MS Exchange Server 2019
Software Type: Trialware (60 days)

DkimX management console

Show the license agreement (EULA)

File Size Content
DKIMX_v3.51.351.MSI 2.84 MB
  • DkimX 3.51 Build 351 -/- Release Date: 2022-03-01
    MSI Installation Package for 64-bit Windows
DKIMX_v3.51.351.CHM 165 KB
  • Documentation (HTML Help) only. This file is included in the product distribution file. You will download this file in case that you want to take a look at the documentation before installing the product.
  • Note: If you download the documentation separately, you must unblock the file after downloading it.
Uninstall Instructions

DkimX can be uninstalled by:

  • Open the MS Windows Control Panel
  • Select 'Uninstall a Program'
  • Find DkimX in the list of programs and double click on it
  • Click the 'Uninstall' button in the DkimX Uninstall window