Issue

Smart action replies are not working and are not actioned on as expected. Worklist items on K2 Workspace are not updated or actioned.

Symptoms

After moving On-premises Exchange mailboxes to Exchange Online mailboxes, Smart actions are not working and are being picked up by the K2 Service mailbox as Spam and cannot be processed.

This was identified by applying debugging and the below errors were presented:

Logs
OnMessageReceived Start 

OnMessageReceived tmp SPAM!

OnMessageReceived done

Resolution

To resolve this issue, add the entries below in the K2HostServer.exe.config, and restart the K2 Blackpearl service:

<system self="K2:Domain\ServiceAccount" enableListeners="true" allowAmbiguity="true">

        <security spamSecurity="Off"> <!-- Default is InternalMail. -->
    </system>



K2 Documentation on Spam security

https://help.k2.com/onlinehelp/k2blackpearl/icg/4.7/default.htm#Configure/bp_Smartactions.htm