I have 3 content switches acting as DNS servers for my website. Occasionally they respond to valid A record queries with an rcode 3 name error. The problem is that this error is cached by some internet DNS servers and clients cannot resolve an address for my website until the SOA expires and there is a successfull refresh. Oddly enough this only seems to occurr with requests/queries from Verizon and Level 3. Queries via DNSStuff.com are always successfull. I'm running version 08.10.1.06.
Thanks in advance.