This release contains the following updates:
Added new message revocation and management information features
Refer to ‘Capturing headers’ and ‘Persisting header in the mail flow’ in the Technical Overview and Operators Guide for further details.
Minor revisions to the wording of the non-delivery reports
Corrected spelling of parameter:
The revised setting is implemented when a new settings.env file is generated during installation. Refer to the applicable Update Instructions for your site and release.