Firewall blocking mDNSResponder data port 5353 on office network

Hi All,

Is there a way to allow mDNSResponder through the firewall???

I had a similar problem a while back and during one startup the firewall asked if I wanted to allow mDNSResponder and I said yes. But now the window does not come up. I have added itunes to the list of specific apps which also include: Safari.app, ntpd, Executor.app, LogMeIn.app, nmblookup,nmbd, krb5kdc, qmasterd, NetAuthAgent.app, iPhoto.app, Screen Sharing.app, RealPlayer.app and quitTime Player.app.
Am I missing something?

It seems to be related to port 5353 being blocked by my apple firewall set at "Set acess for specific services and applications". As you can see below it is doing it for my computer and others

May 13 09:54:58 Jim-Mols-Computer Firewall[52]: Deny mDNSResponder data in from 192.168.1.64:5353 uid = 0 proto=17 [my computer address on the network]
May 13 09:48:56 Jim-Mols-Computer Firewall[52]: Deny mDNSResponder data in from 192.168.1.90:5353 uid = 0 proto=17 [another computer in the building]

I can see where the firewall would might block other computers but am I to assume my computer is trying to talk to itself and being denied?

Thanks for your ideas

More stuff below that I don't understand:
May 13 09:54:58 Jim-Mols-Computer Firewall[52]: Deny mDNSResponder data in from fe80::20a:95ff:fe9c:7800:5353 uid = 0 proto=17