Sorry about the delay and thanks for the replies... I made the changes you said and now I can telnet localip 53 succesfully.
Named service starts with no errors but I can't still telnet webip 53 (i suppose this is some limitation on the router side) because as you can see on the attached image, port 53 is open on both TCP and UDP!!
I get some errors on my syslog when I try to access my domain. (this errors can be seen bellow)
So I'm still unable to connect to domain.
Thanks once again!!