I've found something new in my Apache logfile.
Code:
192.168.10.100 - - [06/Sep/2004:21:46:09 +0200] "recipientid=101&sessionid=6758" 200 6249 "-" "-"
192.168.10.100 - - [30/Sep/2004:01:01:04 +0200] "recipientid=100&sessionid=3505" 200 6261 "-" "-"
192.168.10.100 - - [30/Sep/2004:01:38:33 +0200] "recipientid=102&sessionid=9146" 200 6261 "-" "-"
192.168.10.100 - - [30/Sep/2004:23:29:47 +0200] "recipientid=100&sessionid=5150" 200 6261 "-" "-"
192.168.10.100 - - [01/Oct/2004:00:24:53 +0200] "recipientid=102&sessionid=6424" 200 6261 "-" "-"
192.168.10.100 - - [01/Oct/2004:00:40:46 +0200] "recipientid=104&sessionid=9536" 200 6261 "-" "-"
Does anybody have any idea what this could be?