I have a very strange problem here. My server is inaccessible from Brazil.
Something is wrong with the DNS. We have our local DNS server that resolves all the domains for which we host sites or email accounts.
Everything is fine in other countries, but Brazil can not get our IP addresses from the local BIND DNS server.
The firewall is a CSF file and it looks like it has nothing to do with this problem.
Why does this happen? Ideas?