Hello MimeKit!
We replaced our DKIM signer implementation with the one from MimeKit (https://github.com/jstedfast/MimeKit).
This should provide better compatibility and improved signature handling.
NOTE: If you update from version 2.* to 3.* read the instructions at: https://github.com/Pro/dkim-exchange#updating-from-version-2-to-3
New: Switched to MimeKit implementation for DKIM signer
New: Better handling of private key reading and generation. Now using OpenSSL format New: The configurator now checks if the public key in the DNS record matches the suggested value New: The Control Panel now contains a link to the DKIM signer configurator
New: The DKIM signer can now be uninstalled using Program and Features from the control panel
New: Support for Exchange 2013 SP1 CU11
Fix: Various GUI improvements and smaller fixes
Fix: Agent 'Exchange DkimSigner' went async (#112)
Fix: GUI issues when running Exchange 2007 (#104)