xymonnet sending status to Xymon 4.3.0~beta2

Hi,

I am trying to send status messages from xymonnet (4.3.17) to another Xymon
server still running 4.3.0~beta2.

Status messages are transferred via network, no errors are reported in the
logfiles. However the status isn't updated on the receiving Xymon
server.

Sending messages from bbtest-net (4.3.0~beta2) to the receiving server
mentioned above works fine. Did the protocol changed between those
versions or do you have any other ideas why it isn't working? 

Best regards
Thomas