Updating Upgrading

Updating the Transport Agent

If you want to update the Exchange DKIM Transport Agent simply run Configuration.DkimSigner.exe and on the Information tab press the Upgrade button. (If no new version is available the button shows 'Reinstall').

Updating from version 2.* to 3.*

If you are updating the agent from version 2.* to 3.* you may need to recreate your private key and update the DNS record correspondingly if you used the .xml key format. We now switched to another key library which doesn't support the .xml format anymore.

To recreate your private key just open the Configuration tool and for each domain press the Generate key button. Make sure to update the DNS too.

Additionally, the Message-ID header field changed its name. Open the DKIM Settings Tab in the configurator, remove the Message-ID entry from Headers to sign list, and add MessageId as the corresponding header.

Updating Exchange Server

Before you update the Exchange Server, you have to make sure that the DKIM Signer Version is compatible with the new Exchange Version. Thus the following steps are suggested to avoid any Upgrade problems:

1. Disable the DKIM Signer (Open the configuration executable, on the Information tab press Configure, then disable the DKIM Signer)
2. Update the Exchange Server
3. Update the DKIM Signer (using the configuration executable)
4. Re-enable the DKIM Signer

Requesting New Builds

We aim to supply new builds within a short period of time from Microsoft releasing new cumulative updates, however sometimes we don't spot that a new version has been released (or simply need a nudge) so please check the issues to see if anybody else has already requested a new version and if not, create a request stating which version (e.g. Exchange 2019) and which CU (Cumulative Update, e.g. CU8) you need a build for and we will do our best to provide one ASAP.