DNS Q&A Corner

Questions & Answers on DNS.

The answers are provided by world leading experts on DNS including Cricket Liu, the author of "DNS & BIND". Click on the appropriate question below to see its answer.

A hidden primary master
Can an MX record point to an alias?
Can I add a CNAME record and an MX record for a single domain name?
Can I disable caching without disabling recursion?
Can I make the domain name of my zone an alias?
Can I register my name server by more than one name, with a single IP address?
Can I run a name server behind a fractional T1?
Can I set a TTL on a specific record?
Can I use a hidden primary?
Can I use allow-query in a forward zone?
Can I use an A record instead of an MX record?
Can I use an alias for the name of my name server?
Can I use forwarders with internal root name servers?
Can I use views to separate my recursive name server and authoritative name servers?
Can my BIND 4 name server transfer a zone from a BIND 8 name server?
Can name servers ignore TTLs?
Different domain names in the same reverse-mapping zone.
DNS server behind a firewall
DNS server performance is insufficient
Do slaves only communicate with their masters
Does dynamic update automatically add PTR reocrds?
Does the Microsoft DNS Server support per-zone forwarding?
Have you seen this INSIST error?
How are the SOA record's fields used?
How do I handle reverse mapping with virtual domain names?
How do I restrict queries to internal hosts?
How do I secure a Microsoft DNS Server?
How do I set up rndc.conf and named.conf to allow remote control of my name server?
How do I update multiple views?
How do I use a load balancer with my name servers?
How do people on the Internet find my name server?
How does reverse mapping work?
Is it acceptable to place a private address in a public name server?
Is my configuration messed up?
Is reverse mapping dangerous?
My servers are on private IP addresses. How do I make them accessible to both internal and external clients?
NOTIFY and the Microsoft DNS Server.
Setting up a DNS server
Turning round robin off selectively.
What are a zone's NS records used for?
What are reverse (PTR) records? Why do I need them?
What are the pros and cons of running slaves versus caching-only name servers?
What do I put in the MNAME field of the SOA record for 0.0.127.in-addr.arpa?
What happens if one of my name servers is down?
What is a lame delegation or lame response? How do I fix it?
What version of BIND is the Microsoft DNS Server equivalent to?
What's a good tool for stress testing a name server?
What's the largest number I can use in an MX record?
Where does this CNAME record belong?
Why are remote name servers querying my unregistered name server?
Why are there only 13 root name servers?
Why are these name servers responding non-authoritatively?
Why don't my $INCLUDE control statements work?
Why is my BIND 9.2.0 name server slow at resolving queries?
Why is this old address still being given out?
Why isn't my logging statement working?

A hidden primary master ›

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