Suggestions for interview questions
David Nicol
davidnicol at gmail.com
Fri Nov 18 15:08:23 CST 2005
On 11/17/05, Luke-Jr <luke at dashjr.org> wrote:
> > Q. What type of DNS record is associated with email servers
> > a. MX /Mail Exchanger and Reverse DNS (99% will miss Reverse DNS
> > unless they have ran their own mail server)
MX is the answer. "DNS record" is singular. If the Q asked for "records are"
then MX, A, PTR and TXT should all be there. Extra points if they explain
that MX records should resolve to A records, not CNAME records. Advanced
question: "Why is having a MX that points to a CNAME a problem?" Extra
points if they know DJB's middle name.
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