No data from client

I have just installed a xymon server. This receives data from local client. I have an old bb-client on a second server that reports data to it. I have also installed a xymon client on another server. I see via tcp-dump on xymon server that it receives data from it, but I can't see the data anywhere. No indication in the logs either.

Any ideas why this data does not come into the xymon server?

Øyvind