Hi Sam,
Thanks for the thorough reply.
How does spamdyke know "If a response is received, [use it and stop]"? During a
NXDOMAIN and SERVFAIL, no "response" is received (the ANSWER section of the DNS
response is empty). If the response is empty, doesn't spamdyke then try the
next name server?
Sorry, I missed your earlier email. I'll try to answer both questions here.
Unless you're setting spamdyke's dns-level option, it should be using the
primary servers in order, followed by the secondary servers in order, every
time it runs. If you're just setting the three DNS servers and not
We had an incident where both our local caching name servers stopped working.
They returned SERVFAIL (see example below). They were set as the
"dns-server-ip-primary" and our host-provided DNS server was set as the
"dns-server-ip". Because the primaries were failing, I would expect spamdyke to