I currently operate an all Mikrotik wireless network. Recently I started noticing issues when loading certain websites. I have isolated the problem and it is associated with the DNS server.
When a client asks for a dns resolution it first asks the CPE, the CPE then asks the server and the server in turn asks my ISP DNS server as a last resort.
The problem appears when loading yahoo, ebay, and various other websites (many of them are on hosted on the akemi network). You can ping, traceroute, and the dns does resolve, but the page will just load blank, partially load, or take very long times to load.
If I alter the CPE and tell it to go directly to my ISPs DNS servers the problem disappears.
Has anyone else had these issues?
I have altered the cache-max-ttl times to 1h on the main server.