I installed ejabberd and tried to set it up. On my server there are strict rules which allow only several services and denies everything else.

I experienced starting problems with my iptables rules and found out that ejabberd works when I allow everything in the iptables and restore my rules afterwards. Then it also works for connecting, registering and else.

What could be the problem in my rules?
Attached here: http://fixee.org/paste/s5s744j/

Would be nice to get a correction straight on fixee if I made a mistake.
Thanks in advance.

Edit 1:
In the log files there are no specific error messages during startup.