Missing IP information in imap logs

When there is an IMAP missed authentication the server log shows the following message:

nimap: username authentication failure using internet password

The IP address should appear inside the brackets. For missed HTTP authentications the ip address is shown.

Is there any way to show the ip address in the message ? (without imap debug)

Thanks in advance

(Domino 9.0.1 FP7 on Windows server 2012 64bit)