Need help with debian server

Need help with my debian server
do not know if it is my server there is a problem
or my peers. Every morning some peer are ofline. I reboot and
some are online but not all
I use CCcam 2.21 on debian 6

thanks for the answer
But I only have a few that I have removed and they are blocked, but do not know why the others are ofline it is sama peer who is of all times
has worked all week without any problems I have not changed anything
or deleted / added any new peer

deleted peer that is what I have with iptables-L-n

root@dyndns:~# iptables -L -n
Chain INPUT (policy ACCEPT)
target prot opt source destination
DROP all -- 94.109.38.xxx 0.0.0.0/0
DROP all -- 85.229.107.xxx 0.0.0.0/0
DROP all -- 79.143.177.xxx 0.0.0.0/0