I am running an IBM Domino 9.0.1 (64-bit) server on a Windows Server 2008 R2.
The problem is that the IMAP server task is not displaying the IP address of the connecting client in the console and log.
Here's an example from the console log:
2016-01-08 04:13:14 nimap: edd  authentication failure using internet password
2016-01-08 04:13:16 nimap: easter  authentication failure using internet password
2016-01-08 04:13:19 nimap: felicity  authentication failure using internet password
Between the brackets
 there should be the IP address. For some reason it is not being output.
In contrast, the SMTP server task displays the IP of the connecting client properly, so I don't expect it to be a DNS or similar network configuration issue.
In order to get more details, I've created an event monitor tied to this event, which runs an agent that saves the details of the event in a document. Here is one such document (displayed as a table of field names/values). As you see, it doesn't contain any useful info about the client's IP.
So, how can I get to know the IP of the connecting client without resolving to TCP monitoring tools?
P.s.: I'm aware that this is a dictionary attack.