OpenDKIM

Community

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Standards and Working Groups

OpenDKIM tracks and contributes to active IETF work relevant to email authentication:

DKIM (RFC 6376) – core signing standard
DMARC Working Group
ARC (RFC 8617) – Authenticated Received Chain
IETF upcoming meetings

dkim.org – general DKIM information clearinghouse
OpenDMARC – sister project for DMARC enforcement
OpenARC – ARC implementation
Messaging Anti-Abuse Working Group

Parent Organization

OpenDKIM is a project of The Trusted Domain Project, a 501(c)(3) non-profit.

Documentation

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Package Documentation

Manual Pages

opendkim

opendkim(8) – the milter filter
opendkim.conf(5) – configuration file reference
opendkim-lua(3) – Lua scripting interface

Tools

opendkim-genkey(8) – generate a signing key pair and DNS record
opendkim-testkey(8) – verify key configuration
opendkim-genzone(8) – generate a BIND zone fragment for published keys
opendkim-atpszone(8) – generate ATPS zone data
opendkim-stats(8) – statistics reporting
opendkim-spam(1) – spam correlation tool

Library

libopendkim API documentation
miltertest(8) – milter testing utility

Development Snapshots

Documentation for the current development branch is available in the GitHub repository.

Download

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Current Release

The latest OpenDKIM release is available from the GitHub releases page.

Source tarballs are also available via SourceForge for older releases.

Package Managers

OpenDKIM is available in most major Linux and BSD package repositories:

FreeBSD: pkg install opendkim
Debian/Ubuntu: apt install opendkim opendkim-tools
RHEL/CentOS: dnf install opendkim (EPEL)
Arch Linux: pacman -S opendkim

GPG Signing Key

Release tarballs are signed with the OpenDKIM GPG key. The public key is available here and from public keyservers.

License

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OpenDKIM is distributed under the following license terms.

Portions of the software originating from the Sendmail dkim-milter codebase are covered by the Sendmail Open Source License. Code developed under The Trusted Domain Project is covered by a BSD-style license.

The full license text is included in the LICENSE file in the source distribution and in the GitHub repository.

Copyright

Mailing Lists

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OpenDKIM maintains two mailing lists hosted at lists.opendkim.org.

opendkim-announce

Low-volume, moderated list for release announcements only.

Subscribe by sending a message with subject subscribe to: opendkim-announce-request@lists.opendkim.org

opendkim-users

General discussion, configuration help, and support.

Subscribe by sending a message with subject subscribe to: opendkim-users-request@lists.opendkim.org

List Archives

Archives are available at lists.opendkim.org.

Bug Reports

Please use the GitHub issue tracker to report bugs or request features. Check for existing issues before opening a new one.

OpenDKIM

Community

Standards and Working Groups

Related Projects

Parent Organization

Documentation

Package Documentation

Manual Pages

opendkim

Tools

Library

Development Snapshots

Download

Current Release

Package Managers

GPG Signing Key

License

Copyright

Mailing Lists

opendkim-announce

opendkim-users

List Archives

Bug Reports