At 08:32 12/17/2003, Leonardo Cabral wrote: > What I understand here is the his server has access to DNS servers >(connections to other server's port 53), but his server's firewall only >allows incoming connections to port 80 and 25. I see no problem here because >he's not running a DNS server, or if he is, it's a cache server for internal >use. > >cenize.com ---dns query: udp 53---> other server [Ok] >other server ----dns query:udp 53 ----> cenize.com [Rejected by firewall] > > See the point? Assuming the firewall is stateful and allows the return packets for a query to come through, then you are correct - that should be just fine.
Of course, it would probably be a good idea to verify that by using dig from the console of the mail server - I'd try: dig +recursive +trace @a.root-servers.net uol.com.br -t mx and see what that returns. If it resolves all the way down, then it's definitely good. If not, that could be where the problem is. - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED]
