This plugin will verify DKIM signatures as defined by RFC 6376 and add an Authentication-Results header as appropriate.
There is no configuration required for this plugin.
This plugin also provides a command-line test tool that can be used to debug DKIM issues or to check results.
# dkimverify < message identity="@gmail.com" domain="gmail.com" result=pass
You can add
--debug to the option arguments to see a full trace of the processing.
This plugin and underlying library does not currently support DKIM body length limits (l=).