Hi,

A few places you can check:

1. Is there any errors in your HostServer logs?

2, Open connection string editor and double check your SMTP connections. If you have EWS connections, remove it if you are not using it

3. Make sure your MSMQ is set up properly. Event notifications makes use of Message Queueing service so if it is not set up properly, notifications will not work

4. Check your environment library and string table in K2 Workspace. Made sure your smtp connection strings are correctly set

Hi 

For client event notifications, you can also check if there are any errors found in the eventbus.clientrecordererror table in the K2 DB.

Hi,

I see in the previous post that your error is as follows:

7498 An error has occurred: System.Exception: Exception has been thrown by the target of an invocation. : The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.1 Client was not authenticated at SourceCode.EventBus.Server.EventQueueProcessing.ExecuteAssembly(Int32 CustomEventInstanceID, Int32 CustomEventID, ResolvedPolicyMapping resolvedPolicyMapping, Boolean isConditional, Int32 eventTypeID) at SourceCode.EventBus.Server.EventQueueProcessing.ProcessEvent(Int32 ID)

Does this happen with all client events? If you create a very simple process do you see the same behaviour? 

Here is another link that i found:

http://community.k2.com/t5/K2-blackpearl/The-SMTP-server-requires-a-secure-connection-or-the-client-was/ta-p/78214

Regards

Jean