TTL of CNAME

Barry Margolin barmar at alum.mit.edu
Thu Jan 29 22:31:08 UTC 2004


In article <bvbna8$11e$1 at sf1.isc.org>,
 Michele Chubirka <chubirka at gwu.edu> wrote:

> Does the TTL of the A record which the CNAME points to, override any TTL set
> for a CNAME record? For example, if I set an A record's TTL for 60 seconds,
> but then have a CNAME which points to it with a TTL of 30 seconds, how long
> will the TTL actually be for that CNAME record?

The two records have no effect on each other.  The TTL of the CNAME 
record will be 30 seconds.

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA


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